noun, plural la·bra [ley-bruh, lab-ruh] /ˈleɪ brə, ˈlæb rə/.
- the anterior, unpaired member of the mouthparts of an arthropod, projecting in front of the mouth.
- the outer margin of the aperture of a shell of a gastropod.
Origin of labrum1
Definition for labrum (2 of 2)
noun, plural la·bra [ley-bruh] /ˈleɪ brə/. Archaeology.
Origin of labrum2
Examples from the Web for labrum
Male of Ibla Cumingii; labrum and palpi, as seen with the eye on a level with the summit of the mouth.A Monograph on the Sub-class Cirripedia (Volume 1 of 2)|Charles Darwin
Mouth: labrum with either six very small teeth, or with none.
Mouth: labrum with four or six minute teeth: mandibles with five graduated teeth; inferior point more or less spinose.
The labrum or upper-lip is fulvous; and the antenn are piceous.An Introduction to Entomology: Vol. II (of 4)|William Kirby
The labrum and clypeus are developed as a single prolongation of the oral piece, not as a pair of appendages.
British Dictionary definitions for labrum
noun plural -bra (-brə)
Word Origin for labrum
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.