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):

callithump
    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]