Thrusters meaning : One who thrusts, who pushes or stabs. A device for propelling an object, especially a spacecraft or a ship (marine vessel). A bow thruster or a stern thruster. 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. An ambitious, driven person; a go-getter. (World War II) Those who are for military engagement.