Centaurea solstitialis cen·tau·rea·solstitialis uncommon noun 1. European weed having a winged stem and hairy leaves; adventive in the eastern United States SynonymsBarnaby's thistleyellow star-thistleCentaurea solstitialis Related words Broader terms weed WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
