Source : Webster's Revised Unabridged Dictionary (1913)

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.]

Source : WordNet®

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