Definition of "labrum"
noun:
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The uppermost of the mouthparts (trophi) of a typical insect, such as a cockroach. Typically resembles an upper lip and forms part of the roof of the mouth in such insects.
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Any of several lip-like projections.
from Wiktionary, Creative Commons Attribution/Share-Alike License -
A large basin of warm water, with an overhanging lip, in a Roman bath.
from Wiktionary, Creative Commons Attribution/Share-Alike License
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