Definitions
1.nounOne who thrusts, who pushes or stabs.
2.nounA device for propelling an object, especially a spacecraft or a ship (marine vessel).
3.nounA bow thruster or a stern thruster.
4.nounA 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.nounAn ambitious, driven person; a go-getter.
6.noun(World War II) Those who are for military engagement.