labia
pl. n. (sing.
labium) four lip-shaped folds of tissue forming part of the female external genitalia (see vulva). The labia—comprising a larger, outer pair, the labia majora (sing.
labium majus), and a thinner, inner pair, the labia minora (sing.
labium minus)—enclose the clitoris and the openings of the urethra and vagina.