jaw

Either of two bony or cartilaginous structures that in most vertebrates form the framework of the mouth and hold the teeth.

The mandible or maxilla or the part of the face covering these bones.

Any of various structures of invertebrates that have an analogous function to vertebrate jaws.

Either of two opposed hinged parts in a mechanical device.

The walls of a pass, canyon, or cavern.

A dangerous situation or confrontation.

Impudent argument or back talk.

A conversation or chat.