poontang

1925–30, Americanism; said to be <Limba (West Atlantic language of Sierra Leone) puntuŋ ‘vagina’, though the late documentation of the English word makes such an origin questionable; French putain ‘prostitute’, often cited as the source, accounts precisely for neither the phonetics nor the sense

These meanings are both vulgar slang. When referring to a woman, poontang is perceived as insulting.