Mandible

n.	1.	(Anat.) 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.
	2.	(Zool.) The anterior pair of mouth organs of insects, crustaceaus, and related animals, whether adapted for biting or not. See Illust. of Diptera.

Noun

1.

mandible - the lower jawbone in vertebrates; it is hinged to open the mouth Synonyms: jawbone, jowl, lower jaw, lower jawbone, mandibula, mandibular bone, submaxilla

articulator, condylar process, condyloid process, coronoid process of the mandible, gnathion, gonion, jaw, jawbone, jowl, lantern jaw, lower jaw, lower jawbone, mandibula, mandibular bone, mandibular condyle, mandibular notch, pogonion, submaxilla, symphysion