i) The visible portion of a woman's vulva
, from behind, when she bends over.
ii) The amount the vulva protrudes (sticks out) downwards when a woman bends over.
, as seen from behind, when a woman bends over.
Women who have a plump vulva with fleshy labia
have a lot of underhang, while women with a flat vulva and lean labia
have very little underhang. All the above definitions apply to both clothed or nude women.