'Frostwort' definitions:

Definition of 'frostwort'

From: WordNet
noun
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, frost-weed, frostwort, Helianthemum canadense, Crocanthemum canadense]

Definition of 'Frostwort'

From: GCIDE
  • Frostwort \Frost`wort"\, n. (Bot.) Same as Frostweed. [1913 Webster]