Emily Dickinson Lexicon

ROCK'ET, n.² [L. eruca.]

A plant of the genus Brassica. There is also the bastard rocket, of the genus Reseda; the corn rocket and the sea rocket, of the genus Bunias; the marsh rocket, the water rocket, and the winter rocket, of the genus Sisymbrium; and the dame's violet rocket, of the genus Hesperis. – Fam. of Plants.