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2.
1. A man or woman's crotch; colloquially used to refer to a person's genital area.

2. A man or woman's lice- or "crab"-infested junk.
"I invaded Britney's crabitat last night, and now I'm itching like a mofo."
by akhalde October 15, 2007
 
1.
Crabitat can describe any habitat suitable for any species of crab (decapod crustaceans).
Low tide exposes lots of good crabitat, yo.
by SeaStar17 August 02, 2011