One of the anterior pair of mouthparts of an arthropod, designed for holding and cutting food.
Any of various invertebrate mouthparts serving to hold or bite food materials.
The jaw or a jawbone, especially the lower jawbone in mammals and fishes.
Either of the upper and lower segments of a bird's beak.
One of the first or second pair of mouthparts posterior to the mandibles in many arthropods that are used for tasting and manipulating food.
An upper jaw especially of humans and other mammals in which the bony elements are closely fused.
Either of the two bones that lie with one on each side of the upper jaw lateral to the premaxilla and that in higher vertebrates bear most of the teeth.