back, sack, and crack

back, sack, and crack

n
(Hairdressing & Grooming) (cosmetic depilation of) the back, scrotum, and the area between the buttocks
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014