vroom (vrōōm, vrŏŏm) n. The loud, roaring noise of an engine operating at high speed. intr.v.
vroomed also va·roomed, vroom·ing also va·room·ing, vrooms also va·rooms To move noisily at high speed in or as if in a motor vehicle.
Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.Fourth Edition. Copyright 2007. Published by McGraw Hill.
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Word Origin & History
vroom
1967, echoic of the sound of a motor engine revving.