The female equivilant of a cockblock. A female who prevents another female from getting laid. Sometimes a Mother Hen
Nancy, you stupid snatch latch, I think that guy really liked me and you had to come in and tell him I have a boyfriend!
by Web Witch April 1, 2007
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When a girls so uptight and frigid about doing the deal, her pants are harder to get into than Fort Knoxs.
Dwayne: "Man, I was tongue tickling her sphincter last night then went for the vagine but she was having none of it."

Si: "Yer dude, its not worth your time. That girls got her Snatch on the Latch."
by Treewisp May 31, 2011
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