Jaw

1. One of the bones, usually bearing teeth, which form the framework of the mouth. The blow broke her jaw.
2. The part of the face below the mouth. Her jaw needed to be seen to be believed.
3. On of a pair of opposing parts which are movable towards or from each other, for grasping or crushing anything between them. The jaws of a vise, of a gear puller.
4.To talk; to converse. They stood there jawing.