Top Definition
in sreet racing games (MC3, NFSU 2, etc.)during the race you and a friend or the computer keep switching off hitting the NOS to see who can get ahead first.
guy1:i had a nos war wit my best friend
guy2:kool wat happened
guy1:we both hit the nos button at least 7 times and i ended up winning his memory card
guy2:wow wat did he think
guy1:hes not my best friend anymore
by that 1 dude August 28, 2005
1 Word related to nos war

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