[ley-bruh m, lab-ruh m]

noun, plural la·bra [ley-bruh, lab-ruh] /ˈleɪ brə, ˈlæb rə/.

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.
Anatomy. a ring of cartilage about the edge of a joint surface of a bone.

Nearby words

  1. labradorite,
  2. labret,
  3. labrid,
  4. labrocyte,
  5. labroid,
  6. labrusca,
  7. labuan,
  8. laburnum,
  9. labyrinth,
  10. labyrinth fish

Origin of labrum

1810–20; < Latin: lip; akin to labium


[ley-bruh m]

noun, plural la·bra [ley-bruh] /ˈleɪ brə/. Archaeology.

an ornamented bathtub of ancient Rome.

Origin of labrum

< Latin lābrum basin, contraction of lavābrum bathtub, equivalent to lavā(re) to wash + -brum instrumental suffix Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for labrum

British Dictionary definitions for labrum


noun plural -bra (-brə)

a lip or liplike part, such as the cuticular plate forming the upper lip of insects

Word Origin for labrum

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

Word Origin and History for labrum



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

Medicine definitions for labrum



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.