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1.An alternative name for a Vagina.
2.Generally used by someone who is disgusted by vaginas for example homosexuals.
3.can be used to discribe an infected vagina of the blue waffle variety.
4. Can be used as an insult
"Look there's Katie, I heard she has a massive grimhole"

"You my friend are a right grimhole"

"God she needs a wash, I can smell her Grimhole from here!"
by PastySmasher90 March 25, 2013