verb, noun
verb (-vv-) ~ (sth) (up) when you rev an engine or it revs, it runs quickly:
[VN] The taxi driver revved up his engine. * [V] I could hear the car revving outside.
noun (informal) a complete turn of an engine, used when talking about an engine's speed
SYNREVOLUTION:
4 000 revs per minute * The needle on the rev counter soared.
