/ Thesaurus / B Synonyms of bank vault Find synonyms for: Noun1. vault, bank vault, strongroomusage: a strongroom or compartment (often made of steel) for safekeeping of valuablesWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language