WordNet (r) 3.0 (2006):

private parts
    n 1: external sex organ [syn: genitalia, genital organ,
         genitals, private parts, privates, crotch]

Moby Thesaurus II by Grady Ward, 1.0:

45 Moby Thesaurus words for "private parts":
   bag, ballocks, balls, basket, beard, breasts, cervix, clitoris,
   cod, cods, cullions, family jewels, female organs, gonads, labia,
   labia majora, labia minora, lingam, lips, male organs, meat, nuts,
   nymphae, ovary, parts, penis, phallus, privates, privy parts,
   pubic hair, pudenda, reproductive organs, rocks, scrotum,
   secondary sex characteristic, secrets, sex organs, spermary,
   testes, testicles, uterus, vagina, vulva, womb, yoni