/ Thesaurus / C Synonyms of crotalaria Find synonyms for: Noun1. crotalaria, rattlebox, herb, herbaceous plantusage: any of various plants of the genus Crotalaria having inflated pods within which the seeds rattle; used for pasture and green-manure cropsWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: profiterole Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language