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labrum1

[ley-bruh m, lab-ruh m] /ˈleɪ brəm, ˈlæb rəm/
noun, plural labra
[ley-bruh, lab-ruh] /ˈleɪ brə, ˈlæb rə/ (Show IPA)
1.
a lip or liplike part.
2.
Zoology.
  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.
3.
Anatomy. a ring of cartilage about the edge of a joint surface of a bone.
Origin
1810-1820
1810-20; < Latin: lip; akin to labium

labrum2

[ley-bruh m] /ˈleɪ brəm/
noun, plural labra
[ley-bruh] /ˈleɪ brə/ (Show IPA).
Archaeology
1.
an ornamented bathtub of ancient Rome.
Origin
< Latin lābrum basin, contraction of lavābrum bathtub, equivalent to lavā(re) to wash + -brum instrumental suffix
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for labra

labra

/ˈleɪbrə; ˈlæb-/
noun
1.
the plural of labrum

labrum

/ˈleɪbrəm; ˈlæb-/
noun (pl) -bra (-brə)
1.
a lip or liplike part, such as the cuticular plate forming the upper lip of insects
Word Origin
C19: New Latin, from Latin
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for labra

labrum

n.

lip or lip-like part, 1816, in various anatomical and zoological uses, from Latin labrum, cognate with labium "lip" (see lip (n.)). Also noted mid-15c. as the name of some herb.

Online Etymology Dictionary, © 2010 Douglas Harper
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labra in Medicine

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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7
9
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