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rev

noun [C usually plural]
 
 
/rev/ informal

Definition

a revolution (= one complete turn of a part in an engine): Keep the revs up (= the engine parts turning quickly) or the engine will stall. a rev counter → See also rpmRevolving, rotating and spinningThe engine and engine partsEngines and motors
(Definition of rev noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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