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labrum

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(lā′brəm, lab′rəm)

noun pl. labra

a lip or liplike edge; esp., the upper or front lip of insects and other arthropods

Origin: ModL < L, lip

See labrum in American Heritage Dictionary 4

noun pl. la·bra (-brə)

A lip or liplike structure, such as the one forming the roof of the mouth in insects.
The outer margin of the opening of a gastropod shell.

Origin:

Origin: Latin, lip; see leb- in Indo-European roots

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