semitrailer
noun
semi·trail·er
ˈse-ˌmī-ˌtrā-lər 
ˈse-mē-,
-mi-
plural semitrailers
1
: a freight trailer that when attached is supported at its forward end by the fifth wheel device of the truck tractor
2
: a trucking rig made up of a tractor and a semitrailer
called also big rig
Examples of semitrailer in a Sentence
Recent Examples on the Web
Thousands of tons of drugs have moved through the city over the decades, hidden in vehicle compartments, in suburban stash houses, and semitrailer loads of everything from avocados to live sheep.
—
Jason Meisner, Chicago Tribune, 28 Feb. 2025
An early morning crash on Interstate 25 in southern Colorado’s Huerfano County killed the driver of a semitrailer and sent a Colorado Department of Transportation snow plow driver to the hospital, according to Colorado State Patrol.
—Lauren Penington, The Denver Post, 12 Feb. 2025
Investigators believe the semitrailer rear-ended the snow plow.
—Lauren Penington, The Denver Post, 12 Feb. 2025
Zoom in: Along the Wasatch Front, mobile sources, including cars, trucks, airplanes and semitrailers, are a significant source of air pollution.
—Carly Mallenbaum, Axios, 5 Feb. 2025
See All Example Sentences for semitrailer
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Jason Meisner, Chicago Tribune, 28 Feb. 2025
An early morning crash on Interstate 25 in southern Colorado’s Huerfano County killed the driver of a semitrailer and sent a Colorado Department of Transportation snow plow driver to the hospital, according to Colorado State Patrol.
—Lauren Penington, The Denver Post, 12 Feb. 2025
Investigators believe the semitrailer rear-ended the snow plow.
—Lauren Penington, The Denver Post, 12 Feb. 2025
Zoom in: Along the Wasatch Front, mobile sources, including cars, trucks, airplanes and semitrailers, are a significant source of air pollution.
—Carly Mallenbaum, Axios, 5 Feb. 2025
See All Example Sentences for semitrailer
Cite this Entry
“Semitrailer.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/semitrailer. Accessed 9 Mar. 2025.
Copy CitationKids Definition
semitrailer
noun
semi·trail·er
ˈsem-i-ˌtrā-lər
ˈsem-ˌī-
1
: a freight trailer that when attached is supported at its forward end by the truck tractor
2
: a trucking rig made up of a tractor and a semitrailer
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