The proper name for a board with 3 fins. Invented by Simon Anderson in the 80s

a configuration of fins at the back of a directional board.

Three-fin surfboard design created by Simon Anderson of Australia in 1980; now the most common fin setup used by surfers, the Thruster combines drive and control in most surfing situations.

A small rocket engine used during routine station keeping activities.

a small rocket engine that provides the thrust needed to maneuver a spacecraft

a small propulsive device used by spacecraft and watercraft for station keeping , attitude control , or long duration low thrust acceleration

one who intrudes or pushes himself forward

A tool that allows you to bind a thruster to a numpad numerical key, then place them. They push stuff around.

One who thrusts or stabs.

a "front squat" plus a press

a front squat to overhead press

A way of controlling a satellite's attitude. Thrusters usually contain compressed gas that when sent out of the end of the thruster will move the satellite in space. The force of the compressed gas (the action) causes the satellite to move in the opposite direction (the reaction). This is Newton's third law of motion - for every action there is an equal and opposite reaction.

OK, OK, this is serious! A "thruster" is a member of the field who rides too close to staff or hounds.

A mechanical device for providing (usually) a transverse force in order to help turn a ship.