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WordReference Random House Learner's Dictionary of American English © 2024roll•er1 /ˈroʊlɚ/USA pronunciation n. [countable]- a person or thing that rolls.
- a cylinder, wheel, etc., upon which something is rolled.
- a long, rounded object upon which something is rolled up:the roller of a window shade.
- Mechanical Engineeringa long, rounded object for spreading, crushing, or flattening something.
WordReference Random House Unabridged Dictionary of American English © 2024roll•er1 (rō′lər),USA pronunciation n. - a person or thing that rolls.
- a cylinder, wheel, caster, or the like, upon which something is rolled along.
- a cylindrical body, revolving on a fixed axis, esp. one to facilitate the movement of something passed over or around it.
- a cylindrical object upon which something is rolled up:the roller of a window shade.
- a hollow, cylindrical object of plastic, stiff net, or the like, upon which hair is rolled up for setting.
- Mechanical Engineeringa cylindrical body for rolling over something to be spread out, leveled, crushed, smoothed, compacted, impressed, inked, etc.
- any of various other revolving cylindrical bodies, as the barrel of a music box.
- Metallurgya person in charge of a rolling mill.
- a long, swelling wave advancing steadily.
- Medicinea rolled bandage.
- 1375–1425; late Middle English; see roll, -er1
- 9.See corresponding entry in Unabridged breaker, comber.
roll•er2 (rō′lər),USA pronunciation n. [Ornith.]- Birdsany of several Old World birds of the family Coraciidae that tumble or roll over in flight, esp. in the breeding season.
- Birdstumbler (def. 9).
- Birdsone of a variety of canaries having a warbling or trilling song.
- German Roller, derivative of rollen to roll
- 1655–65
Collins Concise English Dictionary © HarperCollins Publishers:: roller /ˈrəʊlə/ n - a cylinder having an absorbent surface and a handle, used for spreading paint
- Also called: garden roller a heavy cast-iron cylinder or pair of cylinders on an axle to which a handle is attached; used for flattening lawns
- a long heavy wave of the sea, advancing towards the shore
- a hardened cylinder of precision-ground steel that forms one of the rolling components of a roller bearing or of a linked driving chain
- a cylinder fitted on pivots, used to enable heavy objects to be easily moved; castor
- a cylinder, usually of hard rubber, used to ink a forme or plate before impression
- any of various other cylindrical devices that rotate about a cylinder, used for any of various purposes
- a small cylinder, esp one that is heated, onto which a woman's hair may be rolled to make it curl
- a bandage consisting of a long strip of muslin or cheesecloth rolled tightly into a cylindrical form before application
- any of various Old World birds of the family Coraciidae, such as Coracias garrulus (European roller), that have a blue, green, and brown plumage, a slightly hooked bill, and an erratic flight: order Coraciiformes (kingfishers, etc)
- (often capital) a variety of tumbler pigeon that performs characteristic backward somersaults in flight
- a person or thing that rolls
- short for roadroller, steamroller
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