labrum
1 Americannoun
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a lip or liplike part.
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Zoology.
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the anterior, unpaired member of the mouthparts of an arthropod, projecting in front of the mouth.
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the outer margin of the aperture of a shell of a gastropod.
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Anatomy. a ring of cartilage about the edge of a joint surface of a bone.
noun
noun
Etymology
Origin of labrum1
1810–20; < Latin: lip; akin to labium
Origin of labrum2
< Latin lābrum basin, contraction of lavābrum bathtub, equivalent to lavā ( re ) to wash + -brum instrumental suffix
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
With just one competition under her belt this season, she dislocated her shoulder and sustained a torn labrum in what she described as the "silliest fall" in training in Switzerland last month.
From BBC • Feb. 12, 2026
When the halfpipe superstar tore her labrum in her left shoulder in training a month ago, her hopes of becoming the first person to win three consecutive Olympic snowboarding gold medals were in jeopardy.
From Los Angeles Times • Feb. 9, 2026
She said her labrum injury is less serious than feared, though it will prevent her from training before the Games.
From BBC • Jan. 13, 2026
Graterol, 27, missed the 2025 season after undergoing surgery on the labrum in his right shoulder in November 2024.
From Los Angeles Times • Jan. 7, 2026
The labrum is highly bullate, with a row of minute teeth on the crest, placed very close together in the middle.
From A Monograph on the Sub-class Cirripedia With Figures of all the Species. by Darwin, Charles
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
