labra

labrum

1 [ley-bruhm, lab-ruhm]
noun, plural labra [ley-bruh, lab-ruh] .
1.
a lip or liplike part.
2.
Zoology.
a.
the anterior, unpaired member of the mouthparts of an arthropod, projecting in front of the mouth.
b.
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:
1810–20; < Latin: lip; akin to labium

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labrum

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

Origin:
< Latin lābrum basin, contraction of lavābrum bathtub, equivalent to lavā(re) to wash + -brum instrumental suffix

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World English Dictionary
labra (ˈleɪbrə, ˈlæb-)
 
n
the plural of labrum

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
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Etymonline
Word Origin & History

labrum
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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