frost-weed frost·weed uncommon noun 1. perennial of the eastern United States having early solitary yellow flowers followed by late petalless flowers; so-called because ice crystals form on it during first frosts SynonymsfrostweedfrostwortHelianthemum canadenseCrocanthemum canadensei 2. tall perennial herb having clusters of white flowers; the eastern United States SynonymsVirginia crownbeardfrostweedVerbesina virginica Related words Broader terms crownbeardhelianthemum WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
