Definition of jaw

• n. - One of the bones, usually bearing teeth, which form the framework of the mouth.
• n. - Hence, also, the bone itself with the teeth and covering.
• n. - In the plural, the mouth.
• 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.
• n. - A notch or opening.
• n. - A notched or forked part, adapted for holding an object in place; as, the jaw of a railway-car pedestal. See Axle guard.
• 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.
• n. - The inner end of a boom or gaff, hollowed in a half circle so as to move freely on a mast.
• n. - Impudent or abusive talk.
• v. i. - To scold; to clamor.
• v. t. - To assail or abuse by scolding.