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Labrum   Listen
noun
Labrum  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.
(b)
The external margin of the aperture of a shell. See Univalve.





Collaborative International Dictionary of English 0.48


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"Labrum" Quotes from Famous Books



... nearly meeting on the top of the head. Out of the forehead, so to speak, grow the long, delicate, hairy antennm (a), and just below arises the long beak which consists of the bristle-like maxillae (mx, with their palpi, mp) and mandibles (m), and the single hair-like labrum, these five bristle-like organs being laid in the hollowed labium (l). Thus massed into a single awl-like beak, the mosquito, without any apparent effort, thrusts them all except the labium into the flesh. Her hind body may be seen tilling with the red blood, ...
— Our Common Insects - A Popular Account of the Insects of Our Fields, Forests, - Gardens and Houses • Alpheus Spring Packard


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