Rock·et n.  Bot. (a) A cruciferous plant (Eruca sativa) sometimes eaten in Europe as a salad. (b) Damewort. (c) Rocket larkspur. See below.
 Dyer's Rocket. Bot. See Dyer's broom, under Broom.
 Rocket larkspur Bot., an annual plant with showy flowers in long racemes (Delphinium Ajacis).
 Sea rocket Bot., either of two fleshy cruciferous plants (Cakile maritima and Cakile Americana) found on the seashore of Europe and America.
 Yellow rocket Bot., a common cruciferous weed with yellow flowers (Barbarea vulgaris).
 Dy·er n. One whose occupation is to dye cloth and the like.
 dyer's rocket, Dyer's weed. Same as Dyer's broom.
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 dyer's rocket
      n : European mignonette cultivated as a source of yellow dye;
          naturalized in North America [syn: dyer's mignonette, weld,
           Reseda luteola]