clock
noun /klɒk/
  /klɑːk/
Idioms  enlarge image[countable] an instrument for measuring and showing time, in a room, on the wall of a building or on a computer screen (not worn or carried like a watch) enlarge image[countable] an instrument for measuring and showing time, in a room, on the wall of a building or on a computer screen (not worn or carried like a watch)- The clock struck twelve/midnight.
- The clock is fast/slow (= showing a time later/earlier than the true time).
- The clock has stopped.
- The clock is right/wrong.
- My clock said 9.02.
- by a clock It was ten past six by the kitchen clock.
- the clock face (= the front part of a clock with the numbers on)
- The hands of the clock crept slowly around.
- The sound of a clock ticking somewhere in the house kept him awake.
- Ellen heard the loud ticking of the clock in the hall.
- on a clock She checked the time on the clock.
 Extra Examples- Her clock told her it was time to get up.
- His countdown clock reads forty seconds.
- It's ten o'clock by the kitchen clock.
- Pressing the 'Yes‘ or 'No‘ response button stops the clock.
- Pressing the buzzer stops the clock.
- That clock's fast.
- The clock on the mantelpiece said twelve o'clock.
- The clock struck the hour.
- This clock doesn't keep time.
 Oxford Collocations Dictionaryadjective- accurate
- 12-hour
- 24-hour
- …
 - reset
- set
- wind
- …
 - beep
- buzz
- chime (something)
- …
 - face
- tower
- radio
- …
 - against the clock
- around the clock
- round the clock
- …
 - the dial of a clock
- the face of a clock
- the hands of a clock
- …
 
- the clock[singular] (informal) the milometer in a vehicle (= an instrument that measures the number of miles the vehicle has travelled)- on the clock a used car with 20 000 miles on the clock
 
Word Originlate Middle English: from Middle Low German and Middle Dutch klocke, based on medieval Latin clocca ‘bell’.
Idioms 
against the clock 
- if you do something against the clock, you do it fast in order to finish before a particular time- It was a race against the clock to get the building work finished in time.
- to work against the clock
 
around/round the clock 
- all day and all night without stopping- Staff have been working around the clock to resolve the problems.
 
beat the clock 
- to finish a task, race, etc. before a particular time- The player beat the clock and set a new record.
 
clean somebody's clock (North American English, informal)
- to beat somebody at something- She really cleaned his clock in that debate.
 
- to physically attack someone- Rosario delivered a blow that cleaned his clock, leaving him disabled.
 
the clock is ticking (down) 
- used to say that there's not much time left before something happens - The clock is ticking down to midnight on New Year’s Eve.
- The clock is ticking for one mystery lottery winner who has less than 24 hours to claim a £64 million prize.
 
the clocks go forward/back 
- the time changes officially, for example at the beginning and end of summer- The clocks go back tonight.
 
put/turn the clock back 
- to return to a situation that existed in the past; to remember a past age- I wish we could turn the clock back two years and give the marriage another chance.
- Let's turn back the clock to the last decade.
 
- (disapproving) to return to old-fashioned methods or ideas- The new censorship law will turn the clock back 50 years.
 
put the clocks forward/back (British English) 
(North American English set/move the clocks ahead/back)
- to change the time shown by clocks, usually by one hour, when the time changes officially, for example at the beginning and end of summer- Remember to put your clocks back tonight.
 
a race against time/the clock 
- a situation in which you have to do something or finish something very fast before it is too late- Getting food to the starving refugees is now a race against time.
 
run down/out the clock 
- if a sports team tries to run down/out the clock at the end of a game, it stops trying to score and just tries to keep hold of the ball to stop the other team from scoring compare time-wasting
stop the clock 
- to stop measuring time in a game or an activity that has a time limit
watch the clock 
- (disapproving) to be careful not to work longer than the required time; to think more about when your work will finish than about the work itself- employees who are always watching the clock
 
