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Definition of Frostweed
1. 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.
Generic synonyms: Helianthemum, Sun Rose, Sunrose
2. Noun. Tall perennial herb having clusters of white flowers; the eastern United States.
Generic synonyms: Crown Beard, Crown-beard, Crownbeard
Definition of Frostweed
1. n. An American species of rockrose (Helianthemum Canadense), sometimes used in medicine as an astringent or aromatic tonic.
Definition of Frostweed
1. Noun. (botany) An American species of rock rose, ''Helianthemum canadense'', with large yellow flowers. ¹
¹ Source: wiktionary.com
Medical Definition of Frostweed
1.