la·brum /ˈlebrəm/
上唇
la·brum /ˈlebrəm/ 名詞
唇,上唇(昆蟲),孔緣(孢粉)
La·brum n.; pl. L. Labra E. Labrums
1. A lip or edge, as of a basin.
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.
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