semi-tractor
The engine, operators cabin, and hitch, together called the tractor, of a "semi-tractor trailer", comprising the forward part, which tows a trailer hitched thereto; a "semi" <! pronounced sim-my, a trailer truck, a tractor trailer, an eighteen wheeler. Sometimes two and as many as three trailers may be towed. The trailer often is enclosed, refrigerated, etc.

Wikipedia foundation.

Look at other dictionaries:

  • semi-tractor — See tractor …   Dictionary of automotive terms

  • Semi-trailer — In American English a semi trailer is a trailer without a front axle. A large proportion of its weight is supported either by a road tractor or by a detachable front axle assembly known as a dolly or by the tail of another trailer. A semi trailer …   Wikipedia

  • tractor — Truck portion of combination or train. Also called semi, semi tractor, truck tractor, or tractor trailer. See semi tractor truck tractor …   Dictionary of automotive terms

  • Tractor (disambiguation) — Tractor may refer to:Agricultural tractors* Tractor * Tractor crawler, a tractor running on crawler tracks * Mini tractor, a small tractor for garden use * Two wheel tractor, a power tiller * Steam tractor * Tractor pulling, a competitive sport * …   Wikipedia

  • Tractor — Tract or, n. [NL., from L. trahere, tractum, to draw.] 1. That which draws, or is used for drawing. [1913 Webster] 2. pl. (Med.) Two small, pointed rods of metal, formerly used in the treatment called Perkinism. [1913 Webster] 3. a motor vehicle… …   The Collaborative International Dictionary of English

  • tractor airplane — Tractor Tract or, n. [NL., from L. trahere, tractum, to draw.] 1. That which draws, or is used for drawing. [1913 Webster] 2. pl. (Med.) Two small, pointed rods of metal, formerly used in the treatment called Perkinism. [1913 Webster] 3. a motor… …   The Collaborative International Dictionary of English

  • Tractor propeller — Tractor Tract or, n. [NL., from L. trahere, tractum, to draw.] 1. That which draws, or is used for drawing. [1913 Webster] 2. pl. (Med.) Two small, pointed rods of metal, formerly used in the treatment called Perkinism. [1913 Webster] 3. a motor… …   The Collaborative International Dictionary of English

  • Tractor screw — Tractor Tract or, n. [NL., from L. trahere, tractum, to draw.] 1. That which draws, or is used for drawing. [1913 Webster] 2. pl. (Med.) Two small, pointed rods of metal, formerly used in the treatment called Perkinism. [1913 Webster] 3. a motor… …   The Collaborative International Dictionary of English

  • semi — ☆ semi [sem′ī΄ ] n. [< SEMI(TRAILER)] Informal a semitrailer and the TRACTOR (sense 2) to which it is attached …   English World dictionary

  • Semi-trailer truck — A semi trailer truck, also known as tractor trailer or (in the United Kingdom and Ireland) articulated lorry, is an articulated truck or lorry consisting of a towing engine ( tractor in the United States, prime mover in Australia, and truck in… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”