What is the X in X-mas?
inner folds of skin around the vulva, 1781, Modern Latin, literally "lesser lips" (see labia). The singular is labium minus.
labia minora labia mi·no·ra (mə-nôr'ə)pl.n. The two thin inner folds of skin within the vestibule of the vagina enclosed within the cleft of the labia majora.