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1.
Used for mexicans, comes from the verb "watch" and means "ver" in Spanish.
Pedro : ¿ Qué no wachas (vuachas) la corrupcion de tu país?

María: : JAJA, yo solo wacho lo que me conviene.
by promqueen July 02, 2007
 
2.
A word/expression used after throwing down mad hard at something.
When snowboarding:

Doug: damn son i just threw down mad hard on that cab 5 ...wa-cha!
by doug April 18, 2005
 
3.
a gay guy.
Look at this guy, he looks like a wacha.
by RORROTRON January 11, 2009