The Collaborative International Dictionary of English v.0.48:

Jingle \Jin"gle\, v. i. [OE. gingelen, ginglen; prob. akin to E.
   chink; cf. also E. jangle.]
   [1913 Webster]
   1. To sound with a fine, sharp, rattling, clinking, or
      tinkling sound; as, sleigh bells jingle. [Written also
      gingle.]
      [1913 Webster]

   2. To rhyme or sound with a jingling effect. "Jingling street
      ballads." --Macaulay.
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The Collaborative International Dictionary of English v.0.48:

Jingle \Jin"gle\, v. t. [imp. & p. p. Jingled; p. pr. & vb. n.
   Jingling.]
   To cause to give a sharp metallic sound as a little bell, or
   as coins shaken together; to tinkle.
   [1913 Webster]

         The bells she jingled, and the whistle blew. --Pope.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Jingle \Jin"gle\, n.
   1. A rattling, clinking, or tinkling sound, as of little
      bells or pieces of metal.
      [1913 Webster]

   2. That which makes a jingling sound, as a rattle.
      [1913 Webster]

            If you plant where savages are, do not only
            entertain them with trifles and jingles, but use
            them justly.                          --Bacon.
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   3. A correspondence of sound in rhymes, especially when the
      verse has little merit; hence, a rhyming verse of no
      poetical merit. " The least jingle of verse." --Guardian.

   Note: The verses used in commercial advertisements are often
         called jingles, especially when sung.
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   Jingle shell. See Gold shell
      (b), under Gold.
          [1913 Webster]

WordNet (r) 3.0 (2006):

jingle
    n 1: a metallic sound; "the jingle of coins"; "the jangle of
         spurs" [syn: jingle, jangle]
    2: a comic verse of irregular measure; "he had heard some silly
       doggerel that kept running through his mind" [syn:
       doggerel, doggerel verse, jingle]
    v 1: make a sound typical of metallic objects; "The keys were
         jingling in his pocket" [syn: jingle, jingle-jangle,
         jangle]