noun
- a person or thing that thrusts.
- Fox Hunting. a rider who keeps in the front of the field.
- Aerospace. a small rocket attached to a spacecraft and used to control its attitude or translational motion.
noun
- a person or thing that thrusts
- Also called: vernier rocket a small rocket engine, esp one used to correct the altitude or course of a spacecraft
- an auxiliary propeller on a ship, capable of acting athwartships