Top Definition
1)The sound said by somebody (usually a surfer) as they make the hand gesture in which they put their thumb and pinkey finger out and shake their hand
2) Awesome or chill
3) the word "yeah" said in surfer-dialect
1) surfer dude #1: duuuude that wave was totally awesome
Surfer dude #2: *puts thumb and pinky out and shakes hand* chaaaa

2) guy #1: Do you know Derek?
Guy #2: Yeah! Hes a pretty chaaaa guy.

3) surfer dude #1 : Hey do you wanna come over later today?
Surfer dude #2: Chaaaa
by Somedude123123123 April 30, 2013

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