/ Thesaurus / C Synonyms of crotalaria spectabilis Find synonyms for: Noun1. Indian rattlebox, Crotalaria spectabilis, crotalaria, rattleboxusage: erect subshrub having purple-tinted flowers and an inflated pod in which the ripe seeds rattle; IndiaWordNet 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