mandible

The lower jaw of a vertebrate animal.

Either the upper or lower part of the beak in birds.

Any of various mouth organs of invertebrates used for seizing and biting food, especially either of a pair of such organs in insects and other arthropods.

Demandable.

In zoöl, and anatomy, a jaw-bone; a jaw, or the jaw-bone and associate parts; especially, the under jaw.

In polyzoans, an operculum.

The bone, or principal bone, of the lower jaw; the inferior maxilla; — also applied to either the upper or the lower jaw in the beak of birds.

The anterior pair of mouth organs of insects, crustaceaus, and related animals, whether adapted for biting or not. See Illust. of Diptera.

The lower jaw, especially the lower jawbone.

One of a pair of mouthparts of an arthropod designed for holding food.