/ Thesaurus / R Synonyms of rhea americana Find synonyms for: Noun1. rhea, Rhea americana, ratite, ratite bird, flightless birdusage: larger of two tall fast-running flightless birds similar to ostriches but three-toed; found from Brazil to PatagoniaWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: penurious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language