The Collaborative International Dictionary of English v.0.48:

Jaw \Jaw\, v. i. [imp. & p. p. Jawed; p. pr. & vb. n.
   Jawing.]
   1. To scold; to clamor. [Law] --Smollett.
      [1913 Webster]

   2. To talk idly, long-windedly, or without special purpose.
      [PJC]

The Collaborative International Dictionary of English v.0.48:

Jaw \Jaw\ (j[add]), n. [A modification of chaw, formed under the
   influence of F. joue the cheek. See Chaw, Chew.]
   [1913 Webster]
   1. (Anat.)
      (a) One of the bones, usually bearing teeth, which form
          the framework of the mouth.
      (b) Hence, also, the bone itself with the teeth and
          covering.
      (c) In the plural, the mouth.
          [1913 Webster]

   2. 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.
      --Shak.
      [1913 Webster]

   3. (Mach.)
      (a) A notch or opening.
      (b) A notched or forked part, adapted for holding an
          object in place; as, the jaw of a railway-car
          pedestal. See Axle guard.
      (b) 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.
          [1913 Webster]

   4. (Naut.) The inner end of a boom or gaff, hollowed in a
      half circle so as to move freely on a mast.
      [1913 Webster]

   5. Impudent or abusive talk. [Slang] --H. Kingsley.

   Syn: lip.
        [1913 Webster]

   Jaw bit (Railroad), a bar across the jaws of a pedestal
      underneath an axle box.

   Jaw breaker, a word difficult to pronounce. [Obs.]

   Jaw rope (Naut.), a rope which holds the jaws of a gaff to
      the mast.

   Jaw tooth, a molar or grinder; a back tooth.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Jaw \Jaw\, v. t.
   To assail or abuse by scolding. [Law]
   [1913 Webster]

WordNet (r) 3.0 (2006):

jaw
    n 1: the part of the skull of a vertebrate that frames the mouth
         and holds the teeth
    2: the bones of the skull that frame the mouth and serve to open
       it; the bones that hold the teeth
    3: holding device consisting of one or both of the opposing
       parts of a tool that close to hold an object
    v 1: talk socially without exchanging too much information; "the
         men were sitting in the cafe and shooting the breeze" [syn:
         chew the fat, shoot the breeze, chat, confabulate,
         confab, chitchat, chit-chat, chatter, chaffer,
         natter, gossip, jaw, claver, visit]
    2: talk incessantly and tiresomely [syn: yack, jaw, yack
       away, rattle on, yap away]
    3: chew (food); to bite and grind with the teeth; "He jawed his
       bubble gum"; "Chew your food and don't swallow it!"; "The
       cows were masticating the grass" [syn: chew, masticate,
       manducate, jaw]
    4: censure severely or angrily; "The mother scolded the child
       for entering a stranger's car"; "The deputy ragged the Prime
       Minister"; "The customer dressed down the waiter for bringing
       cold soup" [syn: call on the carpet, take to task,
       rebuke, rag, trounce, reproof, lecture,
       reprimand, jaw, dress down, call down, scold,
       chide, berate, bawl out, remonstrate, chew out,
       chew up, have words, lambaste, lambast]

Moby Thesaurus II by Grady Ward, 1.0:

94 Moby Thesaurus words for "jaw":
   abuse, babble, bark at, baste, bat the breeze, bazoo,
   beat the gums, berate, betongue, blab, blabber, blacken, blather,
   blether, carpet, chaps, chat, chatter, chin, chops, clack, clatter,
   dither, embouchure, execrate, fulminate against, gab, gabble, gas,
   gibber, gibble-gabble, go on, gob, gossip, gush, haver, jabber,
   jaws, jowls, kisser, lip, lips, load with reproaches, mandibles,
   maw, maxilla, mouth, mug, mush, muzzle, natter, oral cavity,
   palaver, patter, pour forth, prate, prattle, premaxilla, rag, rail,
   rail at, ramble on, rate, rattle, rattle on, rave against,
   reel off, revile, run on, sass, sauce, shoot the breeze, spiel,
   spout, spout off, talk away, talk nonsense, talk on,
   thunder against, tittle-tattle, tongue-lash, trap, twaddle,
   twattle, upbraid, vilify, vituperate, waffle, wig, yak,
   yakkety-yak, yap, yell at, yelp at