vroom

English Thesaurus

1. the roaring sound made by a motor that is running at high speed (noun.event)

hypernym	:	sound,
definition	:	the sudden occurrence of an audible event (noun.event)

2. make a loud, roaring sound, as of a car engine, while moving (verb.communication)

hypernym	:	howl, roar,
definition	:	make a loud noise, as of wind, water, or vehicles (verb.communication)