DICT.TW Dictionary Taiwan

 Frost·weed n. Bot. An American species of rockrose (Helianthemum Canadense), sometimes used in medicine as an astringent or aromatic tonic.
 Note: ☞ It has large yellow flowers which are often sterile, and later it has abundant but inconspicuous flowers which bear seed. It is so called because, late in autumn, crystals of ice shoot from the cracked bark at the root; -- called also frostwort.
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 frost-weed
      n 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 canadensei]
      2: tall perennial herb having clusters of white flowers; the
         eastern United States [syn: Virginia crownbeard, frostweed,
          Verbesina virginica]

 frostweed
      n 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: frost-weed, frostwort, Helianthemum
           canadense, Crocanthemum canadensei]
      2: tall perennial herb having clusters of white flowers; the
         eastern United States [syn: Virginia crownbeard, frost-weed,
          Verbesina virginica]