/ Thesaurus / R Synonyms of rainbow smelt Find synonyms for: Noun1. American smelt, rainbow smelt, smeltusage: common smelt of eastern North America and Alaska2. rainbow smelt, Osmerus mordax, smeltusage: important marine and landlocked food fish of eastern North America and AlaskaWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language