[1] : The Collaborative International Dictionary of English v.0.48

chatter \chat"ter\, v. t.
   to utter rapidly, idly, or indistinctly.
   1913 webster

         begin his witless note apace to chatter. --spenser.
   1913 webster

[2] : The Collaborative International Dictionary of English v.0.48

chatter \chat"ter\, n.
   1. sounds like those of a magpie or monkey; idle talk; rapid,
      thoughtless talk; jabber; prattle.
      1913 webster

            your words are but idle and empty chatter.
                                                  --longfellow.
      1913 webster

   2. noise made by collision of the teeth, as in shivering.
      1913 webster

[3] : The Collaborative International Dictionary of English v.0.48

chatter \chat"ter\, v. i. imp.  p. p. chattered; p. pr. 
   vb. n. chattering. of imitative origin. cf. chat, v. i.
   chitter.
   1. to utter sounds which somewhat resemble language, but are
      inarticulate and indistinct.
      1913 webster

            the jaw makes answer, as the magpie chatters.
                                                  --wordsworth.
      1913 webster

   2. to talk idly, carelessly, or with undue rapidity; to
      jabber; to prate.
      1913 webster

            to tame a shrew, and charm her chattering tongue.
                                                  --shak.
      1913 webster

   3. to make a noise by rapid collisions.
      1913 webster

            with chattering teeth, and bristling hair upright.
                                                  --dryden.
      1913 webster
see also:
chattered chattering chat chitter 

[4] : WordNet (r) 2.0

chatter
     n 1: noisy talk syn: yak, yack, yakety-yak, cackle
     2: the rapid series of noises made by the parts of a machine
        syn: chattering
     3: the high-pitched continuing noise made by animals birds or
        monkeys syn: chattering
     v 1: click repeatedly or uncontrollably; "chattering teeth" syn:
           click
     2: cut unevenly with a chattering tool
     3: 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, chaffer, natter, gossip, jaw,
         claver, visit
     4: speak about unimportant matters rapidly and incessantly
        syn: piffle, palaver, prate, tittle-tattle, twaddle,
         clack, maunder, prattle, blab, gibber, tattle,
         blabber, gabble
     5: make noise as if chattering away; "the magpies were
        chattering in the trees"
see also:
yak yack yakety-yak cackle chattering click 
chew the fat shoot the breeze chat confabulate confab 
chitchat chaffer natter gossip jaw 
claver visit piffle palaver prate 
tittle-tattle twaddle clack maunder prattle 
blab gibber tattle blabber gabble 

[5] : Moby Thesaurus II by Grady Ward, 1.0

185 moby thesaurus words for "chatter":
   accents, babble, babblement, bavardage, be cold, bibble-babble,
   blab, blabber, blah-blah, blather, blether, blethers, bob, bobble,
   bounce, brattle, bull, bump, cackle, call, caquet, caqueterie,
   carol, caw, chaffer, chat, chattering, cheep, chill, chirk, chirp,
   chirr, chirrup, chitchat, chitter, chitter-chatter, chuck, clack,
   clacket, clatter, clatter about, clitter, clitterclatter, cluck,
   clunter, cock-a-doodle-doo, comment, conversation, converse, coo,
   croak, cronk, crow, cuckoo, declaim, didder, discourse, dither,
   drag out, draw out, drum, elocution, extend, falter, fill out,
   freeze, freeze to death, gab, gabble, gaggle, gas, gibber,
   gibble-gabble, go on, gobble, gossip, grow cold, guff, guggle,
   gush, have a chill, have an ague, have goose pimples, haver, honk,
   hoo, hoot, horripilate, hot air, hustle, idle talk, jabber,
   jabbering, jactitate, jar, jaw, jog, joggle, jolt, jostle, jounce,
   jump, language, lose heat, mere talk, mouth, natter, never finish,
   nonsense talk, oral communication, pad, palaver, parole, patter,
   peep, perish with cold, perorate, pip, pipe, pour forth, prate,
   prating, prattle, prittle-prattle, protract, quack, quake, quaver,
   quiver, racket, ramble on, rapping, rattle, rattle around,
   rattle on, rattletybang, rattling, reel off, roll, ruckle, run on,
   run out, scold, shake, shiver, shock, shudder, sing, small talk,
   speak, speak at length, speaking, speech, spin out, spout,
   spout off, squawk, stretch out, string out, stultiloquence, talk,
   talk away, talk nonsense, talk on, talkee-talkee, talking,
   tittle-tattle, tremble, trill, twaddle, twattle, tweet, twit,
   twitter, vibrate, waffle, wag the tongue, warble, whistle, wobble,
   words, yak, yakkety-yak, yakking, yammer

Chatter >> C Words
Chatter, definition of term: Chatter
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