look up any word, like fleek:
 
1.
class act
"Wow that guy is a gache."
by GACHE the man December 30, 2011
 
2.
a donk, or large ass.
look at that gache. man that is one big butt.
by gotchocolatelatte? September 27, 2010
 
3.
An alternative spelling for the word Gash; a term for the female genitalia, implying that it looks like a hatchet wound.
"Nice gâche"

"Man, that is a nasty gâche"

"Get your gâche out"

"Flash your gâche"
by GuernseyGache September 24, 2009