1. labrum - Noun
2. Labrum - Proper noun
A lip or edge, as of a basin.
An organ in insects and crustaceans covering the upper part of the mouth, and serving as an upper lip. See Illust. of Hymenoptera.
The external margin of the aperture of a shell. See Univalve.
Source: Webster's dictionaryPeripatopsis capensis mandibles or "jaw claws" * On the belly side of the second head segment is the labrum, a mouth opening surrounded by sensitive "lips". Source: Internet
The Mavericks fear that he may have a torn labrum in his right shoulder, according to ESPN’s Tim MacMahon. Source: Internet
An injury to the labrum can cause pain and instability. Source: Internet
Despite playing with the torn labrum, carded rounds of 69-68-68-68 at the PGA Championship to finish T7. Source: Internet
He badly dislocated his wrist in spring training of 2009 and missed several months; last October, he had shoulder surgery to repair a torn labrum. Source: Internet
The 34-year-old from London, Ont., had surgery on May 15 in Michigan to repair a torn labrum, bone spur, and nerve impingement in her left hip, an injury in hindsight she can trace back as far as five years. Source: Internet