What is "rocket larkspur"

Rocket \Rock"et\, n. [F. roquette (cf. Sp. ruqueta, It ruchetta), fr. L. eruca.] (Bot.)

1. A cruciferous plant ( Eruca sativa) sometimes eaten in Europe as a salad.

2. Damewort.

3. 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).

n. ''Consolida regalis'', an annual herbaceous plant.

n. commonly cultivated larkspur of southern Europe having unbranched spikelike racemes of blue or sometimes purplish or pinkish flowers; sometime placed in genus Delphinium [syn: Consolida ambigua, Delphinium ajacis]