That fold of skin where a woman's arm joins her torso. Can be present even in relatively fit women.
Jennifer Lawrence, by her own admission, was rocking some serious armpit vagina at the SAG awards.
by hipdoc January 19, 2014
1 more definition
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
"Great armpit fat -- it's awful," Lawrence said. "Now you can maybe look at my armpit vagina."
by Camilio_ January 19, 2014