/ Thesaurus / C Synonyms of cirsium discolor Find synonyms for: Noun1. field thistle, Cirsium discolor, thistleusage: stout North American thistle with purplish-pink flower headsWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: quandary Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language