"crotch" in the noun sense
1. fork, crotch
the region of the angle formed by the junction of two branches
"they took the south fork"
"he climbed into the crotch of a tree"
2. crotch, fork
the angle formed by the inner sides of the legs where they join the human trunk
3. genitalia, genital organ, genitals, private parts, privates, crotch
external sex organ
Source: WordNet® (An amazing lexical database of English)
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