A driver is a person who operates a vehicle, such as a car, truck, or bus. An ENGINE driver is someone who operates a locomotive ENGINE, while a STEERER is someone who operates a boat or ship. An OPERATOR is someone who operates a machine or device, and a CHAUFFEUR is a professional driver of a private vehicle. A CABBY is a taxi driver, and a CLUB driver is someone who drives a golf ball off the tee. A MOTORIST is someone who drives a motor vehicle, and a PILE driver is someone who operates a PILE driver machine. A SLAVE driver is someone who supervises or directs the work of slaves, and a onewood driver is someone who drives a golf ball off the fairway. Finally, a mootorlist is someone who drives a motor vehicle for a living.