Dame·wort n. Bot. A cruciferrous plant (Hesperis matronalis), remarkable for its fragrance, especially toward the close of the day; -- called also rocket and dame's violet.
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  Hesperis matronalis
       n : long-cultivated herb having flowers whose scent is more
           pronounced in the evening; naturalized throughout Europe
           to Siberia and into North America [syn: damask violet,
           Dame's violet, sweet rocket]