what is the rocket
rockÂ·et 1. n. 1. a. A rocket engine. b. A vehicle or device propelled by one or more rocket engines, especially such a vehicle designed to travel through space. 2. A projectile weapon carrying a warhead that is powered and propelled by rockets. 3.A projectile firework having a cylindrical shape and a fuse that is lit from the rear.ockÂ·et 1. n. 1. a. A rocket engine. b. A vehicle or device propelled by one or more rocket engines, especially such a vehicle designed to travel through space. 2. A projectile weapon carrying a warhead that is powered and propelled by rockets. 3.