/ Thesaurus / D Synonyms of double bar Find synonyms for: Noun1. double bar, bar lineusage: notation marking the end of principal parts of a musical composition; two adjacent bar linesWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: heifer Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language