Definition of rev in English:

rev

nounPlural revs rɛvrɛv

usually revsinformal

1A revolution of an engine per minute.
an engine speed of 1,750 revs
Example sentencesExamples
- Do you have specific targets to achieve for the start of next year, in terms of horsepower and revs?
- ‘It's go time,’ I thought to myself, as I downshifted back down to fourth gear, matched my revs and punched the throttle.
- It also does 320 kph by the time you run out of revs in 6th gear!
- Equally, there are no very slow corners which see the engine operating at very low revs, meaning the rev range required is also within our normal limits.
- All in all the Magnum features integrated aerodynamics, the engine with high torque from low revs, with good fuel consumption.
- Thanks to the turbo-charger, progress in the higher gears is equally swift, provided revs are at or above 1,500 rpm.
- The fuel injection, despite some hunting at low revs, is smooth and predictable, with no drivetrain snatch.
- The rev counter sits in front of the driver, on the steering column.
- This gives a maximum power output of 110 horsepower generated at 5,800 revs.
- With the serious power and torque further up the rev range, driving the car at lower revs is very easy and not likely to unnerve newcomers to the marque.
- Careful drivers put wear and tear on their cars and their backs while driving at higher revs in a lower gear, thereby inflicting more noise and pollution on local residents.
- We're going with lower engine revs - 10,300 rather than 10,700.
- As a general rule, we have been reducing maximum revs by 1,000 rpm for free practice on Friday.
- Anytime day and particularly night you will hear a Fireblade or the like screaming to maximum revs between gears as some young stud guns it in an endeavour to impress some local beauty and his mates with his prowess in riding.
- Unless your are driving at high revs, using a good quality paper air filter allows enough flow, but switch to an easier breathing filter if you like to wind up the motor frequently, as that's when it's gasping for air.
- It responds to high revs and comes alive as the red rev counter homes in on the 8,000 rpm redline.
- However, engine noise becomes prominent at higher revs.
- A petrol engine will spin happily, in some cases to 8,000 or 9,000 revs per minute.
- The 5-cylinder/large displacement design was put in place to provide high torque from low engine revs.
- The flight was 25 miles in total and my ground speed was 60 mph with the bar in and about 6,000 revs on the tach.
1. 1.1 An act of increasing the speed of revolution of a vehicle's engine by pressing the accelerator.
  she started it up with a violent rev of the engine
  Example sentencesExamples
  Firmly strapped into the bucket seat next to Chris, in one rev of the engine and a massive cloud of dust, we were off, hurtling over rocks and ditches.
  We were all nearly asleep when I heard the rev of a motor, the squeal of wheels.
  It sounded like a generator or the engine of a diesel truck but with a deeper sound and intervals that were not as fast as you would hear from the revs of an idle engine.

verbrevs, revved, revving rɛvrɛv

[with object]informal

1Increase the running speed of (an engine) or the engine speed of (a vehicle) by pressing the accelerator, especially while the clutch is disengaged.
he revved up the engine and drove off
Example sentencesExamples
- Revving up your metabolism requires both heavy weight and a fast pace.
- Drop into gear, rev the motor and release the clutch.
- He replied by revving the engine and pushing them past the speed limit.
- There was a moment where we all just revved the motors.
- The flashing orange lights of the recovery vehicle beam into my room as the mechanic continually revs the failing engine.
- He was out there starting each vehicle and revving the engines, letting them idle.
- Then there's us, the young drivers who love driving some of course are bad, drive too fast, rev the engine annoyingly and drive recklessly.
- He revved the bike and took off in the direction of the statue.
- A gaggle of brawny bikers revs their choppers out front.
- Or do you think your neighbor would rev up her chainsaw just to shut you up?
- I wrenched my eyes away from the disgustingly happy couple, hopped in my car, revved the engine and sped away.
- Jake revved his bike and popped a wheelie and zoomed between several cars.
- MC for the night, Dean Gorry revved up the crowd with his lightening wit.
- She expected him to follow, but then she heard the engine to his car being revved up, he then turned the vehicle and drove away in an alarmingly high speed.
- Having an auto obviously means you can't rev the engine, drop the clutch and set off with tyres squealing as you try for maximum acceleration off the line.
- Off-stage event sketching will continue to rev up the young crowd.
- To get some tire-spinning momentum at the start, the engine had to be revved up and the clutch pedal banged out.
- One of our favorite stories is when we were getting onto Sunrise Highway late one evening and a Camaro rolled up next to us and started revving his engine, well you can imagine the rest.
- Increasing your activity will rev up your metabolism so you can burn more calories.
- Counsel Barbara McLernon said she felt people would be more tolerant if wagon drivers moderated their speed and stopped revving their vehicles.
1. 1.1no object (of an engine) operate with increasing speed when the accelerator is pressed, especially while the clutch is disengaged.
  he could hear the sound of an engine revving nearby
  Example sentencesExamples
  The Green Machine's engine was revving even before kick-off as table-topping Melrose made the short trip down to Hawick.
  The engines began revving up again ten minutes later.
  Sales engines are revving up at the major brewers in reaction to the poll.
  As he left the pub, the victim heard the sound of car engines revving up, causing excessive noise.
  My father likes to tell the story of how on Saturday mornings you could find Bryan kicking a ball against the garage door, revving up his competitive engine as he waited for his ride to the game.
  Motors revving, we lined up to take turns cruising at cautious speeds across the practice area, which was basically a blanket of dirt.
  Jeremy put his hand on the pad and the car revved to life.
  The sound effects of the car's engines revving up and down is okay, but doesn't provide the high-decibel wow it could.
  Meanwhile, motoring fans were revved up for action when they lined the streets of Castleisland.
  The enormous crowd around the enclosure was screaming cheerily, the car engines were revving up and the propane was spitting menacing proportions of heat.
  Putting up his laptop, he hopped back on the bike and revved off.
  From the darkened bar from which I dictate this missive, I can hear the starter engines revving up!
  The youngsters are revving up the engines of Polaris snowmobiles retrofitted with wheels, anticipating a race to third base.
  The car revved and we went soaring down the street.
  The driver dumped my skis in the dark and revved off to California.
  Other engines are revving up, including capital spending, inventory building, and exports.
  Soon she heard the ferocious sound of an engine revving up across the way.
  Once the school year revved up again, though, you both got way busy.
  As NASCAR's network partners prepare for the upcoming season, Turner Sports is revving up for its role as the producer of the motor sport's Web site.
  And the Democratic base was as revved up as it possibly could have been this year.
2. 1.2 Make or become more active or energetic.
  no object he's revving up for next week's World Cup game
  with object we need to rev up the economy
  Example sentencesExamples
  Why not rev up your brain cells by doing stuff that'll enrich you?
  Athens may be a year away but it's never too early to rev up the marketing bandwagon.
  The economy is flush, and the Bush campaign is revved up and going strong.
  But there's nothing like partisanship to rev up the faithful, so the president and friends are framing Republicans as tools of big business.
  You can also pop in an exercise video to get revved up.
  The binding efficiency index comes out to just under 12, which is nothing to get revved up about.
  Tuesdays are the slowest day of the week for most malls and multiplexes, so any promo that revs up sales would be welcome.
  Manorlands is revving up for a fundraising feast.
  It's been fun to watch the kids getting revved up over this.
  And these projects could take a long time to start up at a time when we need to rev up the economy quickly.
  Even as the Continent's economy revs up, one of the pillars that supports Europe's monetary union is looking distinctly shaky.
  The atmosphere was electric as the bands revved up and spectators cheered their favorites.
  This simple focusing exercise reinforces resolve and revs up the part of the nervous system responsible for relaxation.
  We're just getting revved up.
  Now you're revved up to move forward on projects.
  By mid week, Merrimac had no pledges on the board, but lighting manager Dan Folding is revving up the forces.
  We have two very different characters and I have every intention of revving them up in an effort to extract the maximum from them.
  It was a period when Singapore revved up our industrialisation and urban rebuilding.
  She suddenly revs frantically into life.
  "I'm glad you asked me that, Mister," the boy says, revving up for his pitch.

Origin

Early 20th century: abbreviation of revolution.

revolve from Late Middle English:
The Latin verb volvere had the sense ‘to turn round, roll, tumble’; add re- in front and you get meaning such as ‘turn back, turn round’. This is the basic idea behind revolve and its offshoots: revolution (Late Middle English) which only came to mean the overthrow of a government in 1600, and which developed the form rev for the turning over of a motor in the early 20th century; and revolt (mid 16th century) initially used politically, and developing the sense ‘to make someone turn away in disgust’ in the mid 18th century. The sense ‘roll, tumble’ of volvere developed into vault, both for the sense ‘leap’ (mid 16th century) which came via Old French volter ‘to turn (a horse), gambol’, and for the arch that springs up to form a roof (Middle English). The turning sense is found in voluble (Middle English) initially used to mean ‘turning’, but was used for words rolling out of the mouth by the late 16th century, and in volume (Late Middle English) originally a rolled scroll rather than a book, but with the sense ‘quantity’ coming from an obsolete meaning ‘size or extent (of a book)’ by the early 16th century. Convoluted (late 18th century) comes from convolvere ‘rolled together, intertwined’ (the plant convolvulus, from the same root, that climbs by turning its stem around a support already existed as a word in Latin, where it could also mean a caterpillar that rolls itself up in a leaf); while devolve (Late Middle English) comes from its opposite devolvere ‘to unroll, roll down’; and involve (Late Middle English) from involvere ‘to roll in’.

Definition of rev in US English:

rev

nounrɛvrev

usually revsinformal

1A revolution of an engine per minute.
an engine speed of 1,750 revs
Example sentencesExamples
- All in all the Magnum features integrated aerodynamics, the engine with high torque from low revs, with good fuel consumption.
- The rev counter sits in front of the driver, on the steering column.
- The flight was 25 miles in total and my ground speed was 60 mph with the bar in and about 6,000 revs on the tach.
- Do you have specific targets to achieve for the start of next year, in terms of horsepower and revs?
- Equally, there are no very slow corners which see the engine operating at very low revs, meaning the rev range required is also within our normal limits.
- However, engine noise becomes prominent at higher revs.
- Unless your are driving at high revs, using a good quality paper air filter allows enough flow, but switch to an easier breathing filter if you like to wind up the motor frequently, as that's when it's gasping for air.
- The fuel injection, despite some hunting at low revs, is smooth and predictable, with no drivetrain snatch.
- This gives a maximum power output of 110 horsepower generated at 5,800 revs.
- With the serious power and torque further up the rev range, driving the car at lower revs is very easy and not likely to unnerve newcomers to the marque.
- As a general rule, we have been reducing maximum revs by 1,000 rpm for free practice on Friday.
- It responds to high revs and comes alive as the red rev counter homes in on the 8,000 rpm redline.
- A petrol engine will spin happily, in some cases to 8,000 or 9,000 revs per minute.
- We're going with lower engine revs - 10,300 rather than 10,700.
- ‘It's go time,’ I thought to myself, as I downshifted back down to fourth gear, matched my revs and punched the throttle.
- It also does 320 kph by the time you run out of revs in 6th gear!
- Thanks to the turbo-charger, progress in the higher gears is equally swift, provided revs are at or above 1,500 rpm.
- The 5-cylinder/large displacement design was put in place to provide high torque from low engine revs.
- Anytime day and particularly night you will hear a Fireblade or the like screaming to maximum revs between gears as some young stud guns it in an endeavour to impress some local beauty and his mates with his prowess in riding.
- Careful drivers put wear and tear on their cars and their backs while driving at higher revs in a lower gear, thereby inflicting more noise and pollution on local residents.
1. 1.1 An act of increasing the speed of revolution of a vehicle's engine by pressing the accelerator, especially while the clutch is disengaged.
  Example sentencesExamples
  Firmly strapped into the bucket seat next to Chris, in one rev of the engine and a massive cloud of dust, we were off, hurtling over rocks and ditches.
  We were all nearly asleep when I heard the rev of a motor, the squeal of wheels.
  It sounded like a generator or the engine of a diesel truck but with a deeper sound and intervals that were not as fast as you would hear from the revs of an idle engine.

verbrɛvrev

[with object]informal

1Increase the running speed of (an engine) or the engine speed of (a vehicle) by pressing the accelerator, especially while the clutch is disengaged.
he got into the car, revved up the engine and drove off
no object I revved up enthusiastically
Example sentencesExamples
- Drop into gear, rev the motor and release the clutch.
- He was out there starting each vehicle and revving the engines, letting them idle.
- Or do you think your neighbor would rev up her chainsaw just to shut you up?
- Jake revved his bike and popped a wheelie and zoomed between several cars.
- He replied by revving the engine and pushing them past the speed limit.
- To get some tire-spinning momentum at the start, the engine had to be revved up and the clutch pedal banged out.
- Increasing your activity will rev up your metabolism so you can burn more calories.
- Off-stage event sketching will continue to rev up the young crowd.
- A gaggle of brawny bikers revs their choppers out front.
- She expected him to follow, but then she heard the engine to his car being revved up, he then turned the vehicle and drove away in an alarmingly high speed.
- One of our favorite stories is when we were getting onto Sunrise Highway late one evening and a Camaro rolled up next to us and started revving his engine, well you can imagine the rest.
- MC for the night, Dean Gorry revved up the crowd with his lightening wit.
- There was a moment where we all just revved the motors.
- He revved the bike and took off in the direction of the statue.
- Counsel Barbara McLernon said she felt people would be more tolerant if wagon drivers moderated their speed and stopped revving their vehicles.
- I wrenched my eyes away from the disgustingly happy couple, hopped in my car, revved the engine and sped away.
- The flashing orange lights of the recovery vehicle beam into my room as the mechanic continually revs the failing engine.
- Then there's us, the young drivers who love driving some of course are bad, drive too fast, rev the engine annoyingly and drive recklessly.
- Having an auto obviously means you can't rev the engine, drop the clutch and set off with tyres squealing as you try for maximum acceleration off the line.
- Revving up your metabolism requires both heavy weight and a fast pace.
1. 1.1no object (of an engine or vehicle) operate with increasing speed when the accelerator is pressed, especially while the clutch is disengaged.
  he could hear the sound of an engine revving nearby
  Example sentencesExamples
  Motors revving, we lined up to take turns cruising at cautious speeds across the practice area, which was basically a blanket of dirt.
  The enormous crowd around the enclosure was screaming cheerily, the car engines were revving up and the propane was spitting menacing proportions of heat.
  Soon she heard the ferocious sound of an engine revving up across the way.
  Sales engines are revving up at the major brewers in reaction to the poll.
  My father likes to tell the story of how on Saturday mornings you could find Bryan kicking a ball against the garage door, revving up his competitive engine as he waited for his ride to the game.
  As NASCAR's network partners prepare for the upcoming season, Turner Sports is revving up for its role as the producer of the motor sport's Web site.
  As he left the pub, the victim heard the sound of car engines revving up, causing excessive noise.
  Jeremy put his hand on the pad and the car revved to life.
  Once the school year revved up again, though, you both got way busy.
  The youngsters are revving up the engines of Polaris snowmobiles retrofitted with wheels, anticipating a race to third base.
  The Green Machine's engine was revving even before kick-off as table-topping Melrose made the short trip down to Hawick.
  The engines began revving up again ten minutes later.
  And the Democratic base was as revved up as it possibly could have been this year.
  The car revved and we went soaring down the street.
  Other engines are revving up, including capital spending, inventory building, and exports.
  The sound effects of the car's engines revving up and down is okay, but doesn't provide the high-decibel wow it could.
  Meanwhile, motoring fans were revved up for action when they lined the streets of Castleisland.
  The driver dumped my skis in the dark and revved off to California.
  Putting up his laptop, he hopped back on the bike and revved off.
  From the darkened bar from which I dictate this missive, I can hear the starter engines revving up!
2. 1.2 Make or become more active or energetic.
  no object he's revving up for next week's World Cup game
  with object we need to rev up the economy
  Example sentencesExamples
  The binding efficiency index comes out to just under 12, which is nothing to get revved up about.
  The economy is flush, and the Bush campaign is revved up and going strong.
  Now you're revved up to move forward on projects.
  It was a period when Singapore revved up our industrialisation and urban rebuilding.
  You can also pop in an exercise video to get revved up.
  Tuesdays are the slowest day of the week for most malls and multiplexes, so any promo that revs up sales would be welcome.
  This simple focusing exercise reinforces resolve and revs up the part of the nervous system responsible for relaxation.
  We're just getting revved up.
  Even as the Continent's economy revs up, one of the pillars that supports Europe's monetary union is looking distinctly shaky.
  By mid week, Merrimac had no pledges on the board, but lighting manager Dan Folding is revving up the forces.
  And these projects could take a long time to start up at a time when we need to rev up the economy quickly.
  It's been fun to watch the kids getting revved up over this.
  We have two very different characters and I have every intention of revving them up in an effort to extract the maximum from them.
  She suddenly revs frantically into life.
  Athens may be a year away but it's never too early to rev up the marketing bandwagon.
  The atmosphere was electric as the bands revved up and spectators cheered their favorites.
  "I'm glad you asked me that, Mister," the boy says, revving up for his pitch.
  Manorlands is revving up for a fundraising feast.
  Why not rev up your brain cells by doing stuff that'll enrich you?
  But there's nothing like partisanship to rev up the faithful, so the president and friends are framing Republicans as tools of big business.

Origin

Early 20th century: abbreviation of revolution.

单词	rev
释义	Definition of rev in English: rev nounPlural revs rɛvrɛv usually revsinformal 1A revolution of an engine per minute. an engine speed of 1,750 revs Example sentencesExamples Do you have specific targets to achieve for the start of next year, in terms of horsepower and revs? ‘It's go time,’ I thought to myself, as I downshifted back down to fourth gear, matched my revs and punched the throttle. It also does 320 kph by the time you run out of revs in 6th gear! Equally, there are no very slow corners which see the engine operating at very low revs, meaning the rev range required is also within our normal limits. All in all the Magnum features integrated aerodynamics, the engine with high torque from low revs, with good fuel consumption. Thanks to the turbo-charger, progress in the higher gears is equally swift, provided revs are at or above 1,500 rpm. The fuel injection, despite some hunting at low revs, is smooth and predictable, with no drivetrain snatch. The rev counter sits in front of the driver, on the steering column. This gives a maximum power output of 110 horsepower generated at 5,800 revs. With the serious power and torque further up the rev range, driving the car at lower revs is very easy and not likely to unnerve newcomers to the marque. Careful drivers put wear and tear on their cars and their backs while driving at higher revs in a lower gear, thereby inflicting more noise and pollution on local residents. We're going with lower engine revs - 10,300 rather than 10,700. As a general rule, we have been reducing maximum revs by 1,000 rpm for free practice on Friday. Anytime day and particularly night you will hear a Fireblade or the like screaming to maximum revs between gears as some young stud guns it in an endeavour to impress some local beauty and his mates with his prowess in riding. Unless your are driving at high revs, using a good quality paper air filter allows enough flow, but switch to an easier breathing filter if you like to wind up the motor frequently, as that's when it's gasping for air. It responds to high revs and comes alive as the red rev counter homes in on the 8,000 rpm redline. However, engine noise becomes prominent at higher revs. A petrol engine will spin happily, in some cases to 8,000 or 9,000 revs per minute. The 5-cylinder/large displacement design was put in place to provide high torque from low engine revs. The flight was 25 miles in total and my ground speed was 60 mph with the bar in and about 6,000 revs on the tach. 1.1 An act of increasing the speed of revolution of a vehicle's engine by pressing the accelerator. she started it up with a violent rev of the engine Example sentencesExamples Firmly strapped into the bucket seat next to Chris, in one rev of the engine and a massive cloud of dust, we were off, hurtling over rocks and ditches. We were all nearly asleep when I heard the rev of a motor, the squeal of wheels. It sounded like a generator or the engine of a diesel truck but with a deeper sound and intervals that were not as fast as you would hear from the revs of an idle engine. verbrevs, revved, revving rɛvrɛv [with object]informal 1Increase the running speed of (an engine) or the engine speed of (a vehicle) by pressing the accelerator, especially while the clutch is disengaged. he revved up the engine and drove off Example sentencesExamples Revving up your metabolism requires both heavy weight and a fast pace. Drop into gear, rev the motor and release the clutch. He replied by revving the engine and pushing them past the speed limit. There was a moment where we all just revved the motors. The flashing orange lights of the recovery vehicle beam into my room as the mechanic continually revs the failing engine. He was out there starting each vehicle and revving the engines, letting them idle. Then there's us, the young drivers who love driving some of course are bad, drive too fast, rev the engine annoyingly and drive recklessly. He revved the bike and took off in the direction of the statue. A gaggle of brawny bikers revs their choppers out front. Or do you think your neighbor would rev up her chainsaw just to shut you up? I wrenched my eyes away from the disgustingly happy couple, hopped in my car, revved the engine and sped away. Jake revved his bike and popped a wheelie and zoomed between several cars. MC for the night, Dean Gorry revved up the crowd with his lightening wit. She expected him to follow, but then she heard the engine to his car being revved up, he then turned the vehicle and drove away in an alarmingly high speed. Having an auto obviously means you can't rev the engine, drop the clutch and set off with tyres squealing as you try for maximum acceleration off the line. Off-stage event sketching will continue to rev up the young crowd. To get some tire-spinning momentum at the start, the engine had to be revved up and the clutch pedal banged out. One of our favorite stories is when we were getting onto Sunrise Highway late one evening and a Camaro rolled up next to us and started revving his engine, well you can imagine the rest. Increasing your activity will rev up your metabolism so you can burn more calories. Counsel Barbara McLernon said she felt people would be more tolerant if wagon drivers moderated their speed and stopped revving their vehicles. 1.1no object (of an engine) operate with increasing speed when the accelerator is pressed, especially while the clutch is disengaged. he could hear the sound of an engine revving nearby Example sentencesExamples The Green Machine's engine was revving even before kick-off as table-topping Melrose made the short trip down to Hawick. The engines began revving up again ten minutes later. Sales engines are revving up at the major brewers in reaction to the poll. As he left the pub, the victim heard the sound of car engines revving up, causing excessive noise. My father likes to tell the story of how on Saturday mornings you could find Bryan kicking a ball against the garage door, revving up his competitive engine as he waited for his ride to the game. Motors revving, we lined up to take turns cruising at cautious speeds across the practice area, which was basically a blanket of dirt. Jeremy put his hand on the pad and the car revved to life. The sound effects of the car's engines revving up and down is okay, but doesn't provide the high-decibel wow it could. Meanwhile, motoring fans were revved up for action when they lined the streets of Castleisland. The enormous crowd around the enclosure was screaming cheerily, the car engines were revving up and the propane was spitting menacing proportions of heat. Putting up his laptop, he hopped back on the bike and revved off. From the darkened bar from which I dictate this missive, I can hear the starter engines revving up! The youngsters are revving up the engines of Polaris snowmobiles retrofitted with wheels, anticipating a race to third base. The car revved and we went soaring down the street. The driver dumped my skis in the dark and revved off to California. Other engines are revving up, including capital spending, inventory building, and exports. Soon she heard the ferocious sound of an engine revving up across the way. Once the school year revved up again, though, you both got way busy. As NASCAR's network partners prepare for the upcoming season, Turner Sports is revving up for its role as the producer of the motor sport's Web site. And the Democratic base was as revved up as it possibly could have been this year. 1.2 Make or become more active or energetic. no object he's revving up for next week's World Cup game with object we need to rev up the economy Example sentencesExamples Why not rev up your brain cells by doing stuff that'll enrich you? Athens may be a year away but it's never too early to rev up the marketing bandwagon. The economy is flush, and the Bush campaign is revved up and going strong. But there's nothing like partisanship to rev up the faithful, so the president and friends are framing Republicans as tools of big business. You can also pop in an exercise video to get revved up. The binding efficiency index comes out to just under 12, which is nothing to get revved up about. Tuesdays are the slowest day of the week for most malls and multiplexes, so any promo that revs up sales would be welcome. Manorlands is revving up for a fundraising feast. It's been fun to watch the kids getting revved up over this. And these projects could take a long time to start up at a time when we need to rev up the economy quickly. Even as the Continent's economy revs up, one of the pillars that supports Europe's monetary union is looking distinctly shaky. The atmosphere was electric as the bands revved up and spectators cheered their favorites. This simple focusing exercise reinforces resolve and revs up the part of the nervous system responsible for relaxation. We're just getting revved up. Now you're revved up to move forward on projects. By mid week, Merrimac had no pledges on the board, but lighting manager Dan Folding is revving up the forces. We have two very different characters and I have every intention of revving them up in an effort to extract the maximum from them. It was a period when Singapore revved up our industrialisation and urban rebuilding. She suddenly revs frantically into life. "I'm glad you asked me that, Mister," the boy says, revving up for his pitch. Origin Early 20th century: abbreviation of revolution. revolve from Late Middle English: The Latin verb volvere had the sense ‘to turn round, roll, tumble’; add re- in front and you get meaning such as ‘turn back, turn round’. This is the basic idea behind revolve and its offshoots: revolution (Late Middle English) which only came to mean the overthrow of a government in 1600, and which developed the form rev for the turning over of a motor in the early 20th century; and revolt (mid 16th century) initially used politically, and developing the sense ‘to make someone turn away in disgust’ in the mid 18th century. The sense ‘roll, tumble’ of volvere developed into vault, both for the sense ‘leap’ (mid 16th century) which came via Old French volter ‘to turn (a horse), gambol’, and for the arch that springs up to form a roof (Middle English). The turning sense is found in voluble (Middle English) initially used to mean ‘turning’, but was used for words rolling out of the mouth by the late 16th century, and in volume (Late Middle English) originally a rolled scroll rather than a book, but with the sense ‘quantity’ coming from an obsolete meaning ‘size or extent (of a book)’ by the early 16th century. Convoluted (late 18th century) comes from convolvere ‘rolled together, intertwined’ (the plant convolvulus, from the same root, that climbs by turning its stem around a support already existed as a word in Latin, where it could also mean a caterpillar that rolls itself up in a leaf); while devolve (Late Middle English) comes from its opposite devolvere ‘to unroll, roll down’; and involve (Late Middle English) from involvere ‘to roll in’. Definition of rev in US English: rev nounrɛvrev usually revsinformal 1A revolution of an engine per minute. an engine speed of 1,750 revs Example sentencesExamples All in all the Magnum features integrated aerodynamics, the engine with high torque from low revs, with good fuel consumption. The rev counter sits in front of the driver, on the steering column. The flight was 25 miles in total and my ground speed was 60 mph with the bar in and about 6,000 revs on the tach. Do you have specific targets to achieve for the start of next year, in terms of horsepower and revs? Equally, there are no very slow corners which see the engine operating at very low revs, meaning the rev range required is also within our normal limits. However, engine noise becomes prominent at higher revs. Unless your are driving at high revs, using a good quality paper air filter allows enough flow, but switch to an easier breathing filter if you like to wind up the motor frequently, as that's when it's gasping for air. The fuel injection, despite some hunting at low revs, is smooth and predictable, with no drivetrain snatch. This gives a maximum power output of 110 horsepower generated at 5,800 revs. With the serious power and torque further up the rev range, driving the car at lower revs is very easy and not likely to unnerve newcomers to the marque. As a general rule, we have been reducing maximum revs by 1,000 rpm for free practice on Friday. It responds to high revs and comes alive as the red rev counter homes in on the 8,000 rpm redline. A petrol engine will spin happily, in some cases to 8,000 or 9,000 revs per minute. We're going with lower engine revs - 10,300 rather than 10,700. ‘It's go time,’ I thought to myself, as I downshifted back down to fourth gear, matched my revs and punched the throttle. It also does 320 kph by the time you run out of revs in 6th gear! Thanks to the turbo-charger, progress in the higher gears is equally swift, provided revs are at or above 1,500 rpm. The 5-cylinder/large displacement design was put in place to provide high torque from low engine revs. Anytime day and particularly night you will hear a Fireblade or the like screaming to maximum revs between gears as some young stud guns it in an endeavour to impress some local beauty and his mates with his prowess in riding. Careful drivers put wear and tear on their cars and their backs while driving at higher revs in a lower gear, thereby inflicting more noise and pollution on local residents. 1.1 An act of increasing the speed of revolution of a vehicle's engine by pressing the accelerator, especially while the clutch is disengaged. Example sentencesExamples Firmly strapped into the bucket seat next to Chris, in one rev of the engine and a massive cloud of dust, we were off, hurtling over rocks and ditches. We were all nearly asleep when I heard the rev of a motor, the squeal of wheels. It sounded like a generator or the engine of a diesel truck but with a deeper sound and intervals that were not as fast as you would hear from the revs of an idle engine. verbrɛvrev [with object]informal 1Increase the running speed of (an engine) or the engine speed of (a vehicle) by pressing the accelerator, especially while the clutch is disengaged. he got into the car, revved up the engine and drove off no object I revved up enthusiastically Example sentencesExamples Drop into gear, rev the motor and release the clutch. He was out there starting each vehicle and revving the engines, letting them idle. Or do you think your neighbor would rev up her chainsaw just to shut you up? Jake revved his bike and popped a wheelie and zoomed between several cars. He replied by revving the engine and pushing them past the speed limit. To get some tire-spinning momentum at the start, the engine had to be revved up and the clutch pedal banged out. Increasing your activity will rev up your metabolism so you can burn more calories. Off-stage event sketching will continue to rev up the young crowd. A gaggle of brawny bikers revs their choppers out front. She expected him to follow, but then she heard the engine to his car being revved up, he then turned the vehicle and drove away in an alarmingly high speed. One of our favorite stories is when we were getting onto Sunrise Highway late one evening and a Camaro rolled up next to us and started revving his engine, well you can imagine the rest. MC for the night, Dean Gorry revved up the crowd with his lightening wit. There was a moment where we all just revved the motors. He revved the bike and took off in the direction of the statue. Counsel Barbara McLernon said she felt people would be more tolerant if wagon drivers moderated their speed and stopped revving their vehicles. I wrenched my eyes away from the disgustingly happy couple, hopped in my car, revved the engine and sped away. The flashing orange lights of the recovery vehicle beam into my room as the mechanic continually revs the failing engine. Then there's us, the young drivers who love driving some of course are bad, drive too fast, rev the engine annoyingly and drive recklessly. Having an auto obviously means you can't rev the engine, drop the clutch and set off with tyres squealing as you try for maximum acceleration off the line. Revving up your metabolism requires both heavy weight and a fast pace. 1.1no object (of an engine or vehicle) operate with increasing speed when the accelerator is pressed, especially while the clutch is disengaged. he could hear the sound of an engine revving nearby Example sentencesExamples Motors revving, we lined up to take turns cruising at cautious speeds across the practice area, which was basically a blanket of dirt. The enormous crowd around the enclosure was screaming cheerily, the car engines were revving up and the propane was spitting menacing proportions of heat. Soon she heard the ferocious sound of an engine revving up across the way. Sales engines are revving up at the major brewers in reaction to the poll. My father likes to tell the story of how on Saturday mornings you could find Bryan kicking a ball against the garage door, revving up his competitive engine as he waited for his ride to the game. As NASCAR's network partners prepare for the upcoming season, Turner Sports is revving up for its role as the producer of the motor sport's Web site. As he left the pub, the victim heard the sound of car engines revving up, causing excessive noise. Jeremy put his hand on the pad and the car revved to life. Once the school year revved up again, though, you both got way busy. The youngsters are revving up the engines of Polaris snowmobiles retrofitted with wheels, anticipating a race to third base. The Green Machine's engine was revving even before kick-off as table-topping Melrose made the short trip down to Hawick. The engines began revving up again ten minutes later. And the Democratic base was as revved up as it possibly could have been this year. The car revved and we went soaring down the street. Other engines are revving up, including capital spending, inventory building, and exports. The sound effects of the car's engines revving up and down is okay, but doesn't provide the high-decibel wow it could. Meanwhile, motoring fans were revved up for action when they lined the streets of Castleisland. The driver dumped my skis in the dark and revved off to California. Putting up his laptop, he hopped back on the bike and revved off. From the darkened bar from which I dictate this missive, I can hear the starter engines revving up! 1.2 Make or become more active or energetic. no object he's revving up for next week's World Cup game with object we need to rev up the economy Example sentencesExamples The binding efficiency index comes out to just under 12, which is nothing to get revved up about. The economy is flush, and the Bush campaign is revved up and going strong. Now you're revved up to move forward on projects. It was a period when Singapore revved up our industrialisation and urban rebuilding. You can also pop in an exercise video to get revved up. Tuesdays are the slowest day of the week for most malls and multiplexes, so any promo that revs up sales would be welcome. This simple focusing exercise reinforces resolve and revs up the part of the nervous system responsible for relaxation. We're just getting revved up. Even as the Continent's economy revs up, one of the pillars that supports Europe's monetary union is looking distinctly shaky. By mid week, Merrimac had no pledges on the board, but lighting manager Dan Folding is revving up the forces. And these projects could take a long time to start up at a time when we need to rev up the economy quickly. It's been fun to watch the kids getting revved up over this. We have two very different characters and I have every intention of revving them up in an effort to extract the maximum from them. She suddenly revs frantically into life. Athens may be a year away but it's never too early to rev up the marketing bandwagon. The atmosphere was electric as the bands revved up and spectators cheered their favorites. "I'm glad you asked me that, Mister," the boy says, revving up for his pitch. Manorlands is revving up for a fundraising feast. Why not rev up your brain cells by doing stuff that'll enrich you? But there's nothing like partisanship to rev up the faithful, so the president and friends are framing Republicans as tools of big business. Origin Early 20th century: abbreviation of revolution.
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