driver

One who drives something, in any sense of the verb to drive.

Something that drives something, in any sense of the verb to drive.

A person who drives a motorized vehicle such as a car or a bus.

A person who drives some other vehicle.

A program that acts as an interface between an application and hardware, written specifically for the device it controls.

A golf club used to drive the ball a great distance.

A kind of sail, smaller than a fore and aft spanker on a square-rigged ship, a driver is tied to the same spars.

A mallet.

A tamping iron.

A cooper's hammer for driving on barrel hoops.

A screwdriver.