jaw

The definition of jaw is the two hinged bones that frame the mouth and hold the teeth.

(noun)

An example of the jaw is the hinged body part at the bottom of the face used for chewing.

See jaw in Webster's New World College Dictionary

noun

either of the two bones or bony parts that hold the teeth and frame the mouth in most vertebrates: the mandible () is usually hinged and movable, the maxilla () is usually not
any of various analogous biting structures of invertebrates
the mouth
either of two mechanical parts that open and close to grip or crush something, as in a monkey wrench or vise
the narrow entrance of a canyon, valley, strait, etc.
something grasping or imminent: the jaws of death
Slang a talk

Origin: ME jowe < OFr joue, cheek

intransitive verb

Slang to talk, esp. in a boring or abusive way

transitive verb

Slang to scold or reprove, esp. repeatedly

See jaw in American Heritage Dictionary 4

noun

a. Either of two bony or cartilaginous structures that in most vertebrates form the framework of the mouth and hold the teeth.
b. The mandible or maxilla or the part of the face covering these bones.
c. Any of various structures of invertebrates that have an analogous function to vertebrate jaws.
Either of two opposed hinged parts in a mechanical device.
jaws The walls of a pass, canyon, or cavern.
jaws A dangerous situation or confrontation: the jaws of death.
Slang
a. Impudent argument or back talk: Don't give me any jaw.
b. A conversation or chat.