bur marigold bur·ma·ri·gold uncommon noun 1. any of several plants of the genus Bidens having yellow flowers and prickly fruits that cling to fur and clothing Synonymsbur marigoldburr marigoldbeggar-ticksbeggar's-tickssticktight Related words Broader terms subshrub Narrower terms spanish needlestickseed sunflowerEuropean beggar-ticksswampy beggar-ticks Parts Bidens Part of spanish needles WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.