Definition of "thruster"

thruster

/ˈθɹʌ.stɚ/

noun
plural thrusters
1. One who thrusts, who pushes or stabs.
  Quotations
  Nevertheless osteopaths are coming to regard themselves not so much as thrusters, or even as repositioners, of bones, but as releasers of the patient's own recuperative forces.
  1978, Brian Inglis, The Book of the Back, page 109
2. A device for propelling an object, especially a spacecraft or a ship (marine vessel).
3. (nautical) A bow thruster or a stern thruster.
4. (surfing) A surfboard (usually a shortboard) with three fins of approximately equal size, one centred at the back, one on each side about 25cm forward and out near the rails.
5. An ambitious, driven person; a go-getter.
  Quotations
  The executive is a thruster with ideas to expand or improve the business and his superiors fail to react—for whatever reason—and do not give acceptable explanations.
  1973, Director, volume 25, numbers 7-12, page 346
  His hi-spec gear suggests that he's a corporate high-flyer and he's definitely a bit of a thruster, very much in control, taking care of business.
  2006, Robert Graham, How to Write Fiction (And Think About It), page 16