What is Rocket ?
Rocket is (noun) 1. a type of firework which flies up into the sky We stood in the square and watched the rockets lighting up the sky. 2. a type of bomb which is shot through space at an enemy They fired a homemade rocket into the police station. 3. to give someone a rocket to criticise someone sharply (slang) The manager gave him a rocket when he was late back from lunch. She’ll get a rocket from the boss if she comes in late again. 4. a type of green vegetable eaten in salads (verb) to shoot upwards very fast Prices have rocketed this summer.
source: Easier English, Student Dictionary Upper Intermediate Level