• WordNet 3.6
    • n callithump a noisy mock serenade (made by banging pans and kettles) to a newly married couple
    • n callithump a noisy boisterous parade
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Webster's Revised Unabridged Dictionary
    • n Callithump A somewhat riotous parade, accompanied with the blowing of tin horns, and other discordant noises; also, a burlesque serenade; a charivari.
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Century Dictionary and Cyclopedia
    • n callithump A charivari (which see).
    • callithump To treat to a callithumpian concert.
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In literature:

I became acquainted with callithump when I straightened out the asparagus-bed.
"Dwellers in Arcady" by Albert Bigelow Paine