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Houghton Mifflin

vroom  audio  (vrm, vrm) KEY  also va·room  (v-rm, -rm) KEY 

NOUN:
The loud, roaring noise of an engine operating at high speed.
intr.v.
vroomed, also va·roomed vroom·ing, va·room·ing vrooms, va·rooms
To move noisily at high speed in or as if in a motor vehicle.

ETYMOLOGY:
Imitative


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