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Meaning of labrum

la•brum

Pronunciation: (lā'brum, lab'rum), [key]
— pl. la•bra
  1. a lip or liplike part.
    1. the anterior, unpaired member of the mouthparts of an arthropod, projecting in front of the mouth.
    2. the outer margin of the aperture of a shell of a gastropod.
  2. a ring of cartilage about the edge of a joint surface of a bone.

la•brum

Pronunciation: (lā'brum), [key]
— pl. -bra
  1. an ornamented bathtub of ancient Rome.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.