labium

noun

1. anatomyusually in the pluralA liplike structure; especially one of the two pairs of folds of skin on either side of the vulva.

2. botanyThe lip of a labiate corolla.

3. entomologyA lower mouthpart of an insect that is formed by the second pair of maxillae united in the middle line.

4. zoologyA liplike part of various invertebrates.

5. musicThe lip against which pressured air is driven to produce sound in a recorder and in a pipe organ with flue pipes.

6. A liplike structure that bounds a bodily orifice (especially any of the four labiate folds of a woman's vulva)body