The mandible of a vertebrate, or homologous bone in the lower jaw of ancestral and related animals, which holds teeth.
The jaw or a jawbone, especially the lower jawbone in mammals and fishes.
Any of various invertebrate mouthparts serving to hold or bite food materials.
One of the anterior pair of mouthparts of an arthropod, designed for holding and cutting food.
Either of the upper and lower segments of a bird's beak.