jaw

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun Either of two bony or cartilaginous structures that in most vertebrates form the framework of the mouth and hold the teeth.
• noun The mandible or maxilla or the part of the face covering these bones.
• noun Any of various structures of invertebrates that have an analogous function to vertebrate jaws.
• noun Either of two opposed hinged parts in a mechanical device.
• noun The walls of a pass, canyon, or cavern.
• noun A dangerous situation or confrontation.
• noun Impudent argument or back talk.
• noun A conversation or chat.
• intransitive verb To talk vociferously; jabber.
• intransitive verb To talk; converse.

from The Century Dictionary.

• noun One of the bones which form the skeleton or framework of the mouth; a maxilla or mandible; these bones collectively.
• noun The bones and associated structures of the mouth, as the teeth and soft parts, taken together as instruments of prehension and mastication; mouth-parts in general: commonly in the plural.
• noun Something resembling in position or use, in grasping or biting, the jaw or jaws of an animal.
• noun [⟨ jaw, verb] Rude loquacity; coarse railing; abusive clamor; wrangling.
• noun A considerable quantity of any liquid; a wave.
• To pour out; throw or dash out rapidly, and in considerable quantity, as a liquid; splash; dash.
• To splash; dash, as a wave.
• To talk or gossip; also, to scold; clamor.
• To seize with the jaws; bite; devour.
• To abuse by scolding; use impertinent or Impudent language toward.

from the GNU version of the Collaborative International Dictionary of English.

• noun One of the bones, usually bearing teeth, which form the framework of the mouth.
• noun Hence, also, the bone itself with the teeth and covering.
• noun In the plural, the mouth.
• noun Fig.: Anything resembling the jaw of an animal in form or action; esp., pl., the mouth or way of entrance.
• noun A notch or opening.
• noun A notched or forked part, adapted for holding an object in place. See Axle guard.
• noun One of a pair of opposing parts which are movable towards or from each other, for grasping or crushing anything between them, .
• noun (Naut.) The inner end of a boom or gaff, hollowed in a half circle so as to move freely on a mast.
• noun Slang Impudent or abusive talk.
• noun (Railroad) a bar across the jaws of a pedestal underneath an axle box.
• noun [Obs.] a word difficult to pronounce.
• noun (Naut.) a rope which holds the jaws of a gaff to the mast.
• noun a molar or grinder; a back tooth.
• intransitive verb Law To scold; to clamor.
• intransitive verb To talk idly, long-windedly, or without special purpose.
• transitive verb Law To assail or abuse by scolding.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun One of the bones, usually bearing teeth, which form the framework of the mouth.
• noun The part of the face below the mouth.
• noun figuratively Anything resembling the jaw of an animal in form or action; especially plural, the mouth or way of entrance.
• noun A notch or opening.
• noun A notched or forked part, adapted for holding an object in place.
• noun One of a pair of opposing parts which are movable towards or from each other, for grasping or crushing anything between them.
• noun The inner end of a boom or gaff, hollowed in a half circle so as to move freely on a mast.
• noun Impudent or abusive talk.
• noun slang Axle guard.
• verb transitive To assail or abuse by scolding.