Tractor

Definition of Tractor

Tract´or

n.	1.	That which draws, or is used for drawing.
	2.	(Med.) Two small, pointed rods of metal, formerly used in the treatment called Perkinism.
	3.	a motor vehicle with a powerful engine and large wheels, used to pull farm equipment such as plows, harvesting machinery, etc., over farm land. Smaller forms of farm tractor are completely open, with only a seat for the driver.
	4.	a motor vehicle with a driver's cab and a powerful engine, fitted with a coupling at the rear, and designed to pull a large trailer or semi-trailer on the open highway; - called also truck tractor. The combination of such a tractor with its trailer is called a tractor-trailer, and is a common form of truck used for commercial shipping of freight.
	5.	(Aviation) A propeller screw placed in front of the supporting planes of an aëroplane instead of behind them, so that it exerts a pull instead of a push; - called also Tractor screw and Tractor propeller.
	6.	(Aviation) An airplane having one or more tractor propellers; - called also tractor airplane.

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z