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
Investigators believe the woman ran into the roadway, stumbled and fell in front of the semitrailer truck traveling eastbound in the 1600 block of New York Avenue, the station reported.
—
Khaleda Rahman
shane Croucher, MSNBC Newsweek, 18 June 2025
She was let go from the traffic stop, which was for following a semitrailer too closely, with a warning.
—Shelly Bradbury, Denver Post, 17 June 2025
The semitrailer then continued over the median into the northbound lanes, struck another semitrailer carrying gasoline and rolled onto its side, blocking both directions of I-25, according to the release.
—Lauren Penington, Denver Post, 29 May 2025
The National Transportation Safety Board said driver fatigue and poor company oversight of its drivers also played key roles when the Greyhound bus exited Interstate 70 onto a rest area ramp east of St. Louis and struck three semitrailers parked on the shoulder.
—John O'Connor, Chicago Tribune, 21 May 2025
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Khaleda Rahman
shane Croucher, MSNBC Newsweek, 18 June 2025
She was let go from the traffic stop, which was for following a semitrailer too closely, with a warning.
—Shelly Bradbury, Denver Post, 17 June 2025
The semitrailer then continued over the median into the northbound lanes, struck another semitrailer carrying gasoline and rolled onto its side, blocking both directions of I-25, according to the release.
—Lauren Penington, Denver Post, 29 May 2025
The National Transportation Safety Board said driver fatigue and poor company oversight of its drivers also played key roles when the Greyhound bus exited Interstate 70 onto a rest area ramp east of St. Louis and struck three semitrailers parked on the shoulder.
—John O'Connor, Chicago Tribune, 21 May 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 6 Jul. 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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