Breadcrumb Home > Thesaurus > W Synonyms of watercannon Find synonyms for: Noun1. water cannon, watercannon, hose, hosepipeusage: a hose (carried on a truck) that fires water under high pressure to disperse crowds (especially crowds of rioters)WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of watercannon (Dictionary) ✖ Related Content Daily Word Quiz: sepulture Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language