/ Thesaurus / F Synonyms of full metal jacket Find synonyms for: Noun1. full metal jacket, bullet, slugusage: a lead bullet that is covered with a jacket of a harder metal (usually copper)WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: dormant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language