Jaw n. : One of the bones, usually bearing teeth, which form the framework of the mouth.

Jaw n. : Hence, also, the bone itself with the teeth and covering.

Jaw n. : In the plural, the mouth.

Jaw n. : Fig.: Anything resembling the jaw of an animal in form or action; esp., pl., the mouth or way of entrance; as, the jaws of a pass; the jaws of darkness; the jaws of death.

Jaw n. : A notch or opening.

Jaw n. : A notched or forked part, adapted for holding an object in place; as, the jaw of a railway-car pedestal. See Axle guard.

Jaw n. : One of a pair of opposing parts which are movable towards or from each other, for grasping or crushing anything between them, as, the jaws of a vise, or the jaws of a stone-crushing machine.

Jaw n. : The inner end of a boom or gaff, hollowed in a half circle so as to move freely on a mast.

Jaw n. : Impudent or abusive talk.

Jaw v. i. : To scold; to clamor.

Jaw v. t. : To assail or abuse by scolding.

Example:
What is the largest angle a human Jaw can exhibit without unhinging?

Taxonomy
jaws, jaw bones, vertebrates, mouth, fish, free encyclopedia, upper jaw, lower jaw, prey, quadrate, Human jaw, mammals, Sea urchin, mandibles, Arthropods, pharyngeal arches, gills, braincase.

Defination from the web:
jaw probably originally evolved in the Silurian period and appeared in the Placoderm fish which further diversified in the Devonian. The two most anterior pharyngeal arches are thought to have become the jaw itself and the hyoid arch, respectively. ...