Breadcrumb Home > Thesaurus > H Cite Synonyms of harmonica Find synonyms for: Noun1. harmonica, mouth organ, harp, mouth harp, free-reed instrumentusage: a small rectangular free-reed instrument having a row of free reeds set back in air holes and played by blowing into the desired holeWordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.Definition and meaning of harmonica (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. February 2021 Current Events: US News The Berlin Conference and the Partition of Africa The Implied Powers of Congress The Women's March on Versailles Keeping Your Brain Active in a COVID-19 World The Manchu Related Content Daily Word Quiz: syncretism Analogy of the Day: Today?s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language