Green’s Dictionary of Slang

jaws n.

[the myth of the vagina dentata]

(US) the labia majora.

Show quotations
[US] in E. Cray Erotic Muse (1992) 190: The next time I saw her she was pulling off a hound, / And the jaws of her twat were a-drippin’ on the ground.
[US]B. Jackson Get Your Ass in the Water (1974) 151: Now Lil had nipples on her titties just about as thick as your thumb, / Lil had jaws on her pussy that would make a dead man come.