Douglas Harper's Etymology Dictionary
labia majora
the outer fold of skin around the vulva, 1813, Modern Latin, literally "great lips" (see labia). The singular is labium majus.
Wiktionary
labia majora
n. (context anatomy English) The two outer rounded folds of adipose tissue that lie on either side of the opening of the vagina.
WordNet
labia majora
n. the two outer folds of the vulva
Wikipedia
Labia majora
The labia majora (singular: labium majus) are two prominent longitudinal cutaneous folds that extend downward and backward from the mons pubis to the perineum. Together with the labia minora they form the labia of the vulva.
The labia majora is homologous to the male scrotum.
Usage examples of "labia majora".
Profane rested his ear near her labia majora, as if it were a mouth there, which could speak to him.