thruster

Noun
  1. One who intrudes or pushes himself forward (synset 110515341)
    is a type of: interloper, intruder, trespasser - someone who intrudes on the privacy or property of another without permission
    same as: pusher
  2. A small rocket engine that provides the thrust needed to maneuver a spacecraft (synset 104437739)
    is a type of: rocket, rocket engine - a jet engine containing its own propellant and driven by reaction propulsion

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