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
The investigation showed that a sport utility vehicle driven by the 47-year-old woman struck the rear of a slowing semitrailer, according to the release.
—
Cathy Kozlowicz, jsonline.com, 13 Nov. 2025
One of the semitrailer-truck drivers was also taken to a hospital with minor injuries, police said.
—Emerson Clarridge
updated November 10, Fort Worth Star-Telegram, 10 Nov. 2025
At least one person died early Sunday morning in a semitrailer crash that shut down westbound Interstate 70 in Summit County for roughly 12 hours, according to the Colorado Department of Transportation.
—Lauren Penington, Denver Post, 12 Oct. 2025
All lanes are closed on eastbound Interstate 94 at M-14 after a semitrailer rolled over and crashed this morning in Scio Township.
—Emma George-Griffin, Freep.com, 22 Sep. 2025
See All Example Sentences for semitrailer
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Cathy Kozlowicz, jsonline.com, 13 Nov. 2025
One of the semitrailer-truck drivers was also taken to a hospital with minor injuries, police said.
—Emerson Clarridge
updated November 10, Fort Worth Star-Telegram, 10 Nov. 2025
At least one person died early Sunday morning in a semitrailer crash that shut down westbound Interstate 70 in Summit County for roughly 12 hours, according to the Colorado Department of Transportation.
—Lauren Penington, Denver Post, 12 Oct. 2025
All lanes are closed on eastbound Interstate 94 at M-14 after a semitrailer rolled over and crashed this morning in Scio Township.
—Emma George-Griffin, Freep.com, 22 Sep. 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 22 Nov. 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
Love words? Need even more definitions?
Merriam-Webster unabridged
Share