Tractor

A tractor (from latin trahere) is a device intended for drawing, towing or pulling something which cannot propell itself.

Most commonly the word is used to describe a vehicle intended for such a task on some other vehicle or object.

Most common of these is a tractor designed for use on farms, typically a simple open vehicle with very large driving wheels and one seat, used for pulling agricultural machinery over rough ground, ploughing, harrowing and similar tasks. Most farm tractors have a means to transfer the engine's power to another machine such as a baler or reaper.

A less-well-used term is used to describe road tractors, which are heavy-duty vehicles with large engines and several axles. These tractors are designed to pull long road trailers, most often for the transport of freight of some kind over a significant distance (See Semi-trailer).

Other forms of tractor include artillery tractors, highly-specialised vehicles used to tow guns of varying weights.

Of non-vehicles, a tractor is a part of printer that pulls the paper inside and pushes it outside of the printer.