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
• Syn: ↑frostweed, ↑frostwort, ↑Helianthemum canadense, ↑Crocanthemum canadense
• Hypernyms: ↑helianthemum, ↑sunrose, ↑sun rose
2. tall perennial herb having clusters of white flowers; the eastern United States
• Syn: ↑Virginia crownbeard, ↑frostweed, ↑Verbesina virginica
• Hypernyms: ↑crownbeard, ↑crown-beard, ↑crown beard
Useful english dictionary. 2012.