raketovým
The word "raketovým" is the instrumental singular masculine/neuter form of the Czech adjective "raketový," meaning "rocket-powered" or "rocket-like." It is used to describe something that operates using rockets, is shaped like a rocket, or moves with the speed and force of a rocket.
For example, in Czech, one might refer to a "raketovým motorem" (rocket engine), a "raketovým pohonem" (rocket