单词 | frostweed |
释义 | frostweednoun Either of two perennials of the eastern United States on which ice crystals tend to form from exuded sap under freezing conditions: Crocanthemum canadense (family Cistaceae), which has yellow flowers and is used medicinally as a tonic and an astringent, and a crown beard, Verbesina virginica, which has small white flowers. OriginEarly 19th century; earliest use found in American Monthly Magazine. |
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