thruster

noun5

1. •
   A device for propelling an object, especially a spacecraft or a ship (marine vessel).
2. •
   A bow thruster or a stern thruster.
3. •
   An ambitious, driven person; a go-getter.

   • 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
4. •
   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. •
   One who thrusts, who pushes or stabs.

   • 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