when you look under a female's armpit and there is so much creasing and skin it looks like a vagina. henceforth, vagina armpit.
by SLAYERKG August 21, 2009
by hipdoc January 19, 2014
Term used by Jennifer Lawrence at the 2014 SAG awards. Sarcastically calling "armpit fat".. armpit vagina. Refers to the thin rolls of skin that bulge into the upper armpit from a too-tight dress
by Camilio_ January 20, 2014