Real Dictionary

rocket
A rocket is a missile containing explosive that is powered by gas.
countable noun: A rocket is a firework that quickly goes high into the air and then explodes.
countable noun: A rocket is a space vehicle that is shaped like a long tube.
verb: If something such as a vehicle rockets somewhere, it moves there very quickly.
verb: If things such as prices or social problems rocket, they increase very quickly and suddenly.

rocket in American English 1
any of various devices, typically cylindrical, containing liquid or solid propellants which when ignited produce hot gases or ions that escape through a rear vent and drive the container forward by the principle of reaction: simple rockets are used mainly
to go like a rocket; dart ahead swiftly
noun: any of various simple or complex tubelike devices containing combustibles that on being ignited liberate gases whose action propels the tube through the air: used for pyrotechnic effect, signaling, carrying a lifeline, hurling explosives at an enemy, putt

rocket in American English 2
any of various plants of the crucifer family, with white, yellow, pink, or purple flowers; esp., sea rocket (genus Cakile) found along seashores in Europe and North America
noun: any of various plants belonging to the genus Hesperis, of the mustard family, and related genera

rocket in British English 1
noun: a self-propelling device, esp a cylinder containing a mixture of solid explosives, used as a firework, distress signal, line carrier, etc
verb: to propel (a missile, spacecraft, etc) by means of a rocket

rocket in British English 2
noun: a Mediterranean plant, Eruca sativa, having yellowish-white flowers and leaves used as a salad: family Brassicaceae (crucifers)