Labrum
Pronunciation : La"brum, n.; pl. L. Labra
Part of Speech : E.
Etymology : [L.]
Definition : 1. A lip or edge, as of a basin.
2. (Zo?l.) (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.
Labrums.
Source : Webster's Unabridged Dictionary, 1913