Breadcrumb Home > Thesaurus > W Synonyms of weapon Find synonyms for: Noun 1. weapon, arm, weapon system, instrument usage: any instrument or instrumentality used in fighting or hunting; "he was licensed to carry a weapon" 2. weapon, artillery, persuasion, suasion usage: a means of persuading or arguing; "he used all his conversational weapons" WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of weapon (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 12 Steps to a New Year New Year's Resolution to Slim Down? Martin Luther King Speeches Books of the Bible: Old Testament Books in Order ✖ Related Content Daily Word Quiz: invective Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language