/ Thesaurus / H Synonyms of heavy weapon Find synonyms for: Noun1. artillery, heavy weapon, gun, ordnance, armamentusage: large but transportable armamentWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: profiterole Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language