10 letters · 19 points in Scrabble
noun a noisy boisterous parade
noun a noisy mock serenade (made by banging pans and kettles) to a newly married couple
originUncertain. Perhaps from calli- + thump, or an alteration and backformation from "Gallithumpian", a Dorset and Devon word from 1790s for a society of radical social reformers, in reference to "noisy disturbers of elections and meetings
Etymology from Wiktionary, CC BY-SA 3.0