Tractor

n. vehicle used for hauling loads and drawing farm implements or equipment

A tractor is a vehicle specifically designed to provide a high tractive effort at slow speeds, for the purposes of hauling a trailer or machinery used in agriculture or construction. Most commonly, the term is used to describe the distinctive farm vehicle: agricultural implements may be towed behind or mounted on the tractor, and the tractor may also provide a source of power if the implement is mechanised. Another common use of the term is for the power unit of a semi-trailer truck.
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The IBM 7950, also known as Harvest, was a one-of-a-kind adjunct to the Stretch computer which was installed at the US National Security Agency (NSA). Built by IBM, it was delivered in 1962 and operated until 1976, when it was decommissioned. Harvest was designed to be used for cryptanalysis.
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Noun
1. a wheeled vehicle with large wheels; used in farming and other applications
(hypernym) self-propelled vehicle
(hyponym) bulldozer, dozer
2. a truck that has a cab but no body; used for pulling large trailers or vans
(hypernym) truck, motortruck

n. tractor, vehicle used for hauling loads and drawing farm implements or equipment

n. tractor, agrimotor