/ Thesaurus / O Synonyms of oscine bird Find synonyms for: Noun1. oscine, oscine bird, passerine, passeriform birdusage: passerine bird having specialized vocal apparatusWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: devout Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language