/ Thesaurus / P Synonyms of piano accordion Find synonyms for: Noun1. accordion, piano accordion, squeeze box, free-reed instrument, keyboard instrumentusage: a portable box-shaped free-reed instrument; the reeds are made to vibrate by air from the bellows controlled by the playerWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: opulent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language