• Avery Bulldog tractor, about 1919
    Avery Bulldog tractor, about 1919
  • WordNet 3.6
    • n tractor a wheeled vehicle with large wheels; used in farming and other applications
    • n tractor a truck that has a cab but no body; used for pulling large trailers or vans
    • ***

Additional illustrations & photos:

Moline Universal Tractor, Model D, of 198, in the Hall of Farm Machinery, National Museum of History and Technology Moline Universal Tractor, Model D, of 198, in the Hall of Farm Machinery, National Museum of History and Technology
John Deere Model D tractor, 1923 John Deere Model D tractor, 1923
Scale model of Aultman-Taylor steam tractor of 1892 Scale model of Aultman-Taylor steam tractor of 1892

Webster's Revised Unabridged Dictionary
  • Interesting fact: In the early 1960's, Porsche commercially manufactured farm tractors.
    • Tractor 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.
    • Tractor 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.
    • Tractor (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.
    • Tractor (Aviation) An airplane having one or more tractor propellers; -- called also tractor airplane.
    • Tractor That which draws, or is used for drawing.
    • Tractor (Med) Two small, pointed rods of metal, formerly used in the treatment called Perkinism.
    • ***
Century Dictionary and Cyclopedia
    • n tractor A traction-engine for use on streets and highways. Such tractors may be used to drag loaded vehicles, to drag plows in a gang, or to haul artillery-wagons and fieldpieces.
    • n tractor The frame and steel rope by which a gang of plows is drawn across a field by a tractionengine.
    • n tractor That which draws or is used for drawing; specifically, in the plural, metallic tractors. See the phrase.
    • ***
Chambers's Twentieth Century Dictionary
    • ns Tractor that which draws, esp. in pl. metallic tractors, two bars of iron and of steel, drawn over diseased parts of the body to give supposed relief
    • ***


  • Bill Bryson
    Bill Bryson
    “There are only three things that can kill a farmer: lightning, rolling over in a tractor, and old age.”


Webster's Revised Unabridged Dictionary
NL., from L. trahere, tractum, to draw
Chambers's Twentieth Century Dictionary
L. tractus, pa.p. of trahĕre, to draw.


In literature:

Tractor treads were bent and cracked.
"The Pirates of Ersatz" by Murray Leinster
It knocked me clean under the tractor shed.
"Make Mine Homogenized" by Rick Raphael
Perhaps the most expansive swindle was that of Dr. Perkins, with his Metallic Tractors.
"Customs and Fashions in Old New England" by Alice Morse Earle
A quarter of a mile from the tractor, Evans found a promising looking mound of lava.
"All Day September" by Roger Kuykendall
Ease off your tractors.
"Alarm Clock" by Everett B. Cole
Within a radius of three miles of Ammons three tractors ran all day.
"Land of the Burnt Thigh" by Edith Eudora Kohl
Haygarth, Dr., his exposure of Perkins's "Metallic Tractors," i.
"Memoirs of Extraordinary Popular Delusions and the Madness of Crowds" by Charles Mackay
With that, he felt the pull of a tractor beam.
"Fearful Symmetry" by Ann Wilson
But there's no reason he shouldn't run a tractor.
"The Prairie Mother" by Arthur Stringer
The Waterloo Tractor Works, Waterloo, Iowa, made the tractor in 1923.
"Agricultural Implements and Machines in the Collection of the National Museum of History and Technology" by John T. Schlebecker

In poetry:

But, I sang those songs
before they were written,
I smelled the burnt gasoline
before the blueprints for the tractors were drawn.
"Last Will And Testament" by Nazim Hikmet
Tractors and songs can pass below the cemetery —
in the dawn light, new people, the smell of burnt gasoline,
fields held in common, water in canals,
no drought or fear of the police.
"Last Will And Testament" by Nazim Hikmet
Borne away in the blue wake of tractors,
The lopped trees leave for ever their fitting landscape;
They will grow again in the underground valleys
Where the black miners creep beneath a sagging sky.
"Tree Felling" by George Woodcock
In a house backed by orderly woods,
Facing a tractored sugar-beet country,
Your working hosts engaged to their stint,
You are unlike to encounter
Dragons or romance: were drama a craving,
You would not have come.
"For Friends Only" by W H Auden

In news:

A 34-year-old man named Baki Bardhi is on his tractor.
Tractor-trailer driver rides out the twister in truck.
You can see it picking up tractor trailers and throwing them around.
KTTN/KGOZ News: Truck and tractor pull to highlight 2012 Gooseberry Festival.
Z-turn mowers, Gators, backhoes and a tractor.
(Scroll down for Farm and Dairy's photos from the tractor square dance, as well as our video.
His 70-unit tractor collection in Illinois has dwindled to two.
Today (Saturday) until 4 pm you can drop by the Tractor Supply locations in Lufkin and purchase your raffle ticket(s).
20 m ago misplaced tractor trailer.
Tractor trailer accident on SPID blocks traffic in both directions.
Residents are using tractors and building makeshift levees to avoid a repeat of the 1927 floods.
To expand its truckload division, SalSon Logistics took delivery in August of 50 Freightliner Select 2007 or newer tractors.
ST LOUIS — An Illinois farmer made so much money this year he made loan payments on one tractor a year in advance and exchanged some older ones for newer models.
Region – A tractor trailer truck packed with Jenny Craig dinners and several dozen bales of marijuana, reportedly bound for Massachusetts, was recently stopped in Arizona, where authorities arrested the driver and confiscated the contents.
The grandstands were full on Saturday, July 21 at the Missouri Tractor Pull at the Bourbon County Fairgrounds.

In science:

The pro jective cone construction for an Einstein connection is then equivalent to a M¨obius structure which preserves a Tractor – it is not hard to see that this is flat, see for example [Arm4].
Projective Geometry II: Cones and Complete Classifications
Since every one-dimensional manifold is pro jectively flat, sl(2, R) and sl(1, C) are not possible Tractor holonomy algebras – they are not even possible Ricci-flat algebras, in fact.
Projective Geometry II: Cones and Complete Classifications
As seen in Section 4.5, any hypercomplex Tractor connection corresponds to a quaternionic structure on a manifold N , in other words a g = R ⊕ sl(1, H) ⊕ sl(1, H) structure.
Projective Geometry II: Cones and Complete Classifications
Cartan [Car] proved propositions about two dimensional pro jective structures that are equivalent to stating that the only possible tractor holonomy algebras are sl(3, R) and sl(2, R) ⋊ R2∗ .
Projective Geometry II: Cones and Complete Classifications
Assume there exists a manifold M 2 with non-trivial Tractor holonomy.
Projective Geometry II: Cones and Complete Classifications