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1.
An exclamation used when you pwn the shit out of somebody on counterstrike.

Also can be used as an adjective meaning bitchin.
that guy from 300: BYAWWWWWW!!

dan: dude, did you see that crazy shit just now?
me: yeah, that was pretty byaw.
by aounity October 10, 2007

Words related to byawww

bitchin cunt fat pwn sick ugly