1. 
   vroom
   [v] - make a loud, roaring sound, as of a car engine, while moving
   Found op http://www.webdictionary.co.uk/definition.php?query=vroom
   
   
2. 
   vroom
   noun the roaring sound made by a motor that is running at high speed
   Found op http://wordnetweb.princeton.edu/perl/webwn?s=vroom
   
   
3. 
   Vroom
   Vroom (also spelt varoom) is an onomatopoeia that represents the sound of an engine revving up. It also describes the act of purposefully operating a motor vehicle at high speeds so as to create loud engine noises. The word is a common early childhood sound, and is used in speech therapy techniques...
   Found op http://en.wikipedia.org/wiki/Vroom
   
   
4. 
   vroom
   1) Drag race sound 2) Engine noise 3) Engine sound 4) Howl 5) Revolutionary sound? 6) Revving sound 7) Roar 8) Sound heard at indy 9) Souped-up engine sound
   Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/vroom/1
   
   

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