1 [ley-bruhm, lab-ruhm]
noun, plural labra [ley-bruh, lab-ruh] .
a lip or liplike part.
the anterior, unpaired member of the mouthparts of an arthropod, projecting in front of the mouth.
the outer margin of the aperture of a shell of a gastropod.
Anatomy. a ring of cartilage about the edge of a joint surface of a bone.

1810–20; < Latin: lip; akin to labium Unabridged


2 [ley-bruhm] .
noun, plural labra [ley-bruh] . Archaeology.
an ornamented bathtub of ancient Rome.

< Latin lābrum basin, contraction of lavābrum bathtub, equivalent to lavā(re) to wash + -brum instrumental suffix Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
labrum (ˈleɪbrəm, ˈlæb-)
n , pl -bra
a lip or liplike part, such as the cuticular plate forming the upper lip of insects
[C19: New Latin, from Latin]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin & History

lip or lip-like part, 1816, in various anatomical and zoological uses, from L. labrum, cognate with labium "lip" (see lip).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

labrum la·brum (lā'brəm)
n. pl. la·bra (-brə)
A lip-shaped anatomical edge, rim, or structure.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Example sentences
Management of the throwing shoulder: cuff, labrum and internal impingement.
The procedure included clean up of the labrum and bursa and clean up and reinforcement of the rotator cuff.
Image for labrum
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