'Labrum' definitions:
Definition of 'Labrum'
From: GCIDE
- Labrum \La"brum\, n.; pl. L. Labra, E. Labrums. [L.]
- 1. A lip or edge, as of a basin. [1913 Webster]
- 2. (Zool.) (a) An organ in insects and crustaceans covering the upper part of the mouth, and serving as an upper lip. See Illust. of Hymenoptera. (b) The external margin of the aperture of a shell. See Univalve. [1913 Webster]