Perineal

Perineal is that which pertains to the pelvic floor and the associated structures occupying the pelvic outlet. It also refers to the region between the thighs, bounded in the male by the scrotum and anus and in the female by the vulva and anus.


References
Ingelfinger, F.J. 1980. Dorlands Medical Dictionary. Saunders Press Pub., Philadelphia. 740.