clacker

from The Collaborative International Dictionary of English v.0.48

Clacker \Clack"er\, n.
   1. One who clacks; that which clacks; especially, the clapper
      of a mill.
      [1913 Webster]

   2. A claqueur. See {Claqueur}.
      [1913 Webster]

from Moby Thesaurus II by Grady Ward, 1.0

22 Moby Thesaurus words for "clacker":
      Klaxon, boiler factory, boiler room, bull-roarer, catcall,
      cherry bomb, clack, clapper, cracker, cricket, firecracker, horn,
      noisemaker, rattle, rattlebox, siren, snapper, steam whistle,
      ticktack, whistle, whizgig, whizzer

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