The Collaborative International Dictionary of English v.0.48:

nickelodeon \nick`el*o"de*on\, n. [Nickel + odeon.]
   1. A place of entertainment, as for moving picture
      exhibition, charging a fee or admission price of five
      cents. [U. S.]
      [Webster 1913 Suppl.]

   2. An early version of a jukebox that was operated by
      insertion of a nickel[2].
      [PJC]

   3. (capitalized) The name of a Cable Television channel,
      specializing in programs for children. [Trademark]
      [PJC]

The Collaborative International Dictionary of English v.0.48:

Jukebox \Juke"box\, n.
   1. A phonograph or compact disc player with multiple discs,
      requiring the insertion of coins prior to playing, and
      allowing the user to select the playing of any disc in its
      inventory. An early version was called the nickelodeon.
      [PJC]

   2. (Computers) a data-storage device having multiple compact
      discs, of which only one may be on-line at any given time,
      which permits the user (through computer commands) to
      select on-line access to any disc from its inventory, in a
      manner reminiscent of a musical jukebox[1].
      [PJC]

WordNet (r) 3.0 (2006):

nickelodeon
    n 1: a cabinet containing an automatic record player; records
         are played by inserting a coin [syn: jukebox,
         nickelodeon]

Moby Thesaurus II by Grady Ward, 1.0:

53 Moby Thesaurus words for "nickelodeon":
   Gramophone, PA, PA system, Victrola, audio sound system,
   audiophile, binaural system, bitch box, bullhorn, cartridge,
   ceramic pickup, changer, cinema, cinematograph, crystal pickup,
   derived four-channel system, discrete four-channel system,
   drive-in, four-channel stereo system, hi-fi, hi-fi fan,
   high-fidelity, intercom, intercommunication system, jukebox,
   kinematograph, magnetic pickup, monaural system, mono,
   movie theater, moving-picture theater, needle, phonograph,
   photoelectric pickup, pickup, picture house, picture palace,
   public-address system, quadraphonic sound system,
   radio-phonograph combination, record changer, record player,
   sound reproduction system, sound truck, squawk box, stereo, stylus,
   system, tape deck, tape recorder, tone arm,
   transcription turntable, turntable