/ Thesaurus / L Synonyms of light machine gun Find synonyms for: Noun1. light machine gun, submachine gunusage: a submachine gun not greater than .30 millimeterWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: aversion Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language