labrum

noun

la·​brum ˈlā-brəm 

1

: an upper or anterior mouthpart of an arthropod consisting of a single median piece in front of or above the mandibles

2

: a ring of fibrous cartilage forming the margin of the shallow cavity of the upper part of the scapula by which the humerus articulates with the shoulder girdle

Examples of labrum in a Sentence

Recent Examples on the Web

Mets left-handed starter David Peterson also had his left hip labrum repaired in the fall of 2023, and bounced back to have a career year in 2024. —Abbey Mastracco, New York Daily News, 2 Mar. 2025

Other than Bregman, the only remaining free agent infielder projected for more than 2.0 WAR by Fangraphs is Ha-Seong Kim, who will have to start the 2025 season on the injured list following surgery to repair a torn labrum. —Daniel R. Epstein, Forbes, 1 Jan. 2025

Lee doesn’t have any lingering pain after tearing his left labrum and undergoing shoulder surgery and currently has no limitations. —Justice Delos Santos, The Mercury News, 14 Feb. 2025

But in 2023, Sanders tore his labrum as a junior, and he was forced undergo an extensive surgery. —Mike Kaye, Charlotte Observer, 28 Jan. 2025

Word History

Etymology

New Latin, from Latin, lip, edge — more at lip

First Known Use

1578, in the meaning defined at sense 2

Rhymes for labrum

• candelabrum

Kids Definition

labrum

noun

la·​brum ˈlā-brəm 

: the upper mouthpart of an arthropod in front of or above the mandibles

Medical Definition

labrum

noun

la·​brum ˈlā-brəm 

plural labra -brə 

1

: an upper or anterior mouthpart of an arthropod consisting of a single median piece in front of or above the mandibles

2

: a fibrous ring of cartilage attached to the rim of a joint: as

a

: glenoid labrum

b

: acetabular labrum