labium

n. lip or part that resembles a lip (Anatomy)

Definition (plural labia) is a Latin-derived term meaning "Lip". Labium and its derivatives (including labial, labrum) are used to describe any lip-like structure, but in the English language, labium often specifically refers to parts of the vulva.
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Labium /la·bi·um/ pl. la´bia [L.] 1. lip. 2. a fleshy border or edge; a liplike structure. 3. in the plural, often used to denote the labia majora [more]Labium - Community and Resources

Noun
1. any of the four lip-shaped folds of the female vulva
(hypernym) lip
(hyponym) labia majora
(part-holonym) vulva

n. labium, lip or part that resembles a lip (Anatomy)