1. A small rocket engine that provides the thrust needed to manoeuvre a spacecraft
   "The astronauts fired the spacecraft's thrusters to adjust its orbit"
    
2. One who intrudes or pushes themself forward
   "He was known as a thruster in the industry, always promoting himself at every opportunity";
   - pusher

Derived forms: thrusters

Type of: interloper, intruder, rocket, rocket engine, trespasser

Encyclopedia: Thruster