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.
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   2. Discordant sound; wrangling.
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   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.
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   2. To talk idly; to prate; to babble; to chatter; to gossip.
      "Thou janglest as a jay." --Chaucer.
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   3. To quarrel in words; to altercate; to wrangle.
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            Good wits will be jangling; but, gentles, agree.
                                                  --Shak.
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            Prussian Trenck . . . jargons and jangles in an
            unmelodious manner.                   --Carlyle.
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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]