rev

Universal Words 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.