The Collaborative International Dictionary of English v.0.48:

callathump \callathump\ n.
   1. a noisy boisterous parade.

   Syn: callithump, callithump parade.
        [WordNet 1.5]

   2. a noisy mock serenade (made by banging pans and kettles)
      to a newly married couple.

   Syn: shivaree, chivaree, charivari, callithump.
        [WordNet 1.5]

The Collaborative International Dictionary of English v.0.48:

Callithump \Cal"li*thump`\, n.
   A somewhat riotous parade, accompanied with the blowing of
   tin horns, and other discordant noises; also, a burlesque
   serenade; a charivari. [U. S.] [Also spelled callathump.]
   [1913 Webster]

WordNet (r) 3.0 (2006):

callathump
    n 1: a noisy boisterous parade [syn: callithump, callathump,
         callithump parade]
    2: a noisy mock serenade (made by banging pans and kettles) to a
       newly married couple [syn: shivaree, chivaree,
       charivari, callithump, callathump, belling]