The Collaborative International Dictionary of English v.0.48:

Jangle \Jan"gle\, n. [Cf. OF. jangle.]
   [1913 Webster]
   1. Idle talk; prate; chatter; babble. --Chaucer.
      [1913 Webster]

   2. Discordant sound; wrangling.
      [1913 Webster]

   3. The unmelodious ringing of multiple metallic objects
      striking together, such as a set of small bells.
      [PJC]

            The musical jangle of sleigh bells.   --Longfellow.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Jangle \Jan"gle\, v. i. [imp. & p. p. Jangled; p. pr. & vb. n.
   Jangling.] [OE. janglen to quarrel, OF. jangler to rail,
   quarrel; of Dutch or German origin; cf. D. jangelen, janken,
   to whimper, chide, brawl, quarrel.]
   [1913 Webster]
   1. To sound harshly or discordantly, as bells out of tune.
      [1913 Webster]

   2. To talk idly; to prate; to babble; to chatter; to gossip.
      "Thou janglest as a jay." --Chaucer.
      [1913 Webster]

   3. To quarrel in words; to altercate; to wrangle.
      [1913 Webster]

            Good wits will be jangling; but, gentles, agree.
                                                  --Shak.
      [1913 Webster]

            Prussian Trenck . . . jargons and jangles in an
            unmelodious manner.                   --Carlyle.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Jangle \Jan"gle\, v. t.
   To cause to sound harshly or inharmoniously; to produce
   discordant sounds with.
   [1913 Webster]

         Like sweet bells jangled, out of tune, and harsh.
                                                  --Shak.
   [1913 Webster]

WordNet (r) 3.0 (2006):

jangle
    n 1: a metallic sound; "the jingle of coins"; "the jangle of
         spurs" [syn: jingle, jangle]
    v 1: make a sound typical of metallic objects; "The keys were
         jingling in his pocket" [syn: jingle, jingle-jangle,
         jangle]

Moby Thesaurus II by Grady Ward, 1.0:

179 Moby Thesaurus words for "jangle":
   Babel, Bedlam let loose, Discordia, Eris, agree to disagree, babel,
   be at cross-purposes, be at variance, bedlam, belch, blare, blast,
   blat, bobbery, brawl, bray, break, break off, brouhaha, burr, buzz,
   cackle, cacophony, caw, change ringing, charivari, chime, chiming,
   chink, chirm, chirr, clamor, clang, clanging, clangor, clank,
   clanking, clap, clash, clashing, clatter, clink, collide,
   commotion, conflict, contention, contradict, counter, crash,
   craunch, croak, crump, crunch, differ, differ in opinion, din,
   ding, ding-a-ling, dingdong, dinging, dingle, disaccord,
   disaffinity, disagree, discord, discordance, discordancy,
   disharmony, dissent, dissonance, dong, donging, donnybrook,
   drunken brawl, dustup, enmity, flap, fracas, free-for-all,
   friction, gong, grate, grind, groan, growl, grumble, harshness,
   hell broke loose, hit a clinker, hold opposite views, howl, hubbub,
   hue and cry, hullabaloo, incompatibility, incompatibleness,
   inharmoniousness, inharmony, irritate, jangling, jar, jarring,
   jingle, jingle-jangle, jinglejangle, jingling, jostle, knell,
   knelling, loud noise, mere noise, mischief, mismatch, mismate,
   misunderstand one another, negate, noise, noise and shouting,
   noncooperation, not get along, object, open conflict, outcry,
   pandemonium, peal, peal ringing, pealing, pull different ways,
   racket, rasp, rattle, reverberation, rhubarb, ring, ring changes,
   ringing, roar, row, rub, ruckus, ruction, rumble, rumpus, scranch,
   scrape, scratch, scrunch, shindy, shivaree, snarl, snore, sound,
   sound a knell, strained relations, stridor, tension, thunder,
   thunderclap, ting, ting-a-ling, tingle, tingling, tink, tinkle,
   tinkling, tinnitus, tintamarre, tintinnabulate, toll, tolling,
   tumult, twang, unharmoniousness, unpleasantness, unstring, untune,
   uproar, upset, vary