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Synonyms

semitrailer

American  
[sem-i-tray-ler] / ˈsɛm ɪˌtreɪ lər /

noun

  • semitrailers
    plural
  1. Also called semi. a detachable trailer for hauling freight, with wheels at the rear end, the forward end being supported by the rear of a truck tractor when attached.

  2. tractor-trailer.


semitrailer British  
/ ˌsɛmɪˈtreɪlə /

noun

  1. a type of trailer or articulated lorry that has wheels only at the rear, the front end being supported by the towing vehicle

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Noun Inflected Forms

Etymology

Origin of semitrailer

First recorded in 1915–20; semi- + trailer

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Filling up his seven tractors, two semitrailer trucks and a combine harvester for the year cost about $11,500 in 2025.

From The Wall Street Journal ● Oct. 4, 2026

Who was riding on the back of the semitrailer and why was still being investigated, Slaymaker said.

From Seattle Times ● May 5, 2024

From inside the shop, Zapata watched a semitrailer truck slowly turn and block the road.

From Los Angeles Times ● Nov. 16, 2023

Dash-camera and body-camera video released by the Ohio State Highway Patrol shows troopers with their lights and sirens on following a semitrailer before the truck stops.

From New York Times ● Jul. 25, 2023

They weren’t in the fifth-wheel or the semitrailer.

From "Storm Runners" by Roland Smith

A few years ago, Bud Bosch noticed semitrailers occasionally rumbling along the two-lane rural road by his property.

From Los Angeles Times ● Feb. 5, 2023

Most pass unseen, crossing the country crammed into semitrailers.

From Seattle Times ● Dec. 29, 2022

The Chinese rocket stage is massive — weighing 22 metric tons and measuring as long as a pair of 53-foot semitrailers parked end to end, Muelhaupt said.

From Washington Post ● Nov. 4, 2022

“Send your semitrailers home,” Ms. Freeland told protesters.

From New York Times ● Feb. 14, 2022

The strong winds also whipped up dust that reduced visibility to zero west of Wakeeney, Kansas, the state Department of Transportation said, and caused at least four semitrailers to blow over.

From Washington Times ● Dec. 16, 2021

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