n. 唇, 阴唇, 下唇

[医] 唇

[ noun ]
a liplike structure that bounds a bodily orifice (especially any of the four labiate folds of a woman's vulva)
<noun.body>

Labium \La"bi*um\, n.; pl. L. {Labia}, E. {Labiums}. [L.]
1. A lip, or liplike organ.

2. The lip of an organ pipe.

3. pl. (Anat.) The folds of integument at the opening of the
vulva.

4. (Zo["o]l.)
(a) The organ of insects which covers the mouth beneath,
and serves as an under lip. It consists of the second
pair of maxill[ae], usually closely united in the
middle line, but bearing a pair of palpi in most
insects. It often consists of a thin anterior part
(ligula or palpiger) and a firmer posterior plate
(mentum).
(b) Inner margin of the aperture of a shell.