The Collaborative International Dictionary
Damewort
Damewort \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.
--Loudon.
Wiktionary
damewort
n. dame's rocket, (taxlink Hesperis matronalis species noshow=1).