/ Thesaurus / B Synonyms of butterfly valve Find synonyms for: Noun1. butterfly valve, valveusage: a valve in a carburetor that consists of a disc that turns and acts as a throttleWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: fortuitous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language