driver

1. (n) A person who drives a motorized vehicle such as a car, truck, bus, train, forklift, etc. 2. (n) One who drives something. 3. (n) Something that drives something else. 4. (n) A factor contributing to something; a cause. 5. (n) (computing) A device driver; a program that acts as an interface between an application and hardware, written specifically for the device it controls. 6. (n) (golf) A golf club used to drive the ball a great distance. 7. (n) (audio) A device that converts an electrical signal to sound waves; the principal component of loudspeakers and headphones. 8. (n) A person who drives livestock: a drover. 9. (n) (engineering) Any driving element in any mechanism, which drives the driven element. 10. (n) (aviation, slang) A pilot (person who flies aircraft). 11. (n) (chiefly in the plural) A driving wheel of a locomotive. 12. (n) A mallet. 13. (n) A tamping iron. 14. (n) A cooper's hammer for driving on barrel hoops. 15. (n) A screwdriver, a nutdriver, or a bit for such a tool; such bits include nutsetters. 16. (n) (nautical) A kind of sail, smaller than a fore and aft spanker on a square-rigged ship, a driver is tied to the same spars. 17. (n) A surname. 18. (n) An unincorporated community in Mississippi County, Arkansas, United States. 19. (n) A neighbourhood in the city of Suffolk, Virginia, United States. 20. (n) An inner suburb of Palmerston, Northern Territory, Australia.