tractor trailer
Noun: - A large, heavy motor vehicle used for transporting goods, consisting of two main, permanently connected parts: a powerful front section (the tractor or cab) that contains the engine and driver's compartment, and a large rear section (the trailer) that carries the freight.
This term refers to the complete, combined vehicle unit. It is commonly used in logistics, transportation, and general descriptions of large trucks on highways. - The tractor trailer was hauling a load of new cars across the country. - Due to its size, the tractor trailer had difficulty navigating the narrow city streets. - All tractor trailer drivers are required to take mandatory rest breaks.
- The term is often used in legal and regulatory contexts concerning commercial vehicle standards, weight limits, and driver licensing (e.g., a Commercial Driver's License for operating a tractor trailer).
- In industry jargon, the complete unit is sometimes simply called a "rig."
- Semi-trailer truck / Semi: A common synonym, often shortened to "semi." This term highlights that the trailer's front end is supported by the tractor.
- 18-wheeler: A colloquial term referring to the total number of wheels commonly found on these vehicles (ten on the tractor, eight on the trailer).
- Articulated lorry: The British English equivalent.
- Big rig: An informal North American term.
- Tractor: Refers specifically to the front, powered section of the vehicle.
- Trailer: Refers specifically to the unpowered cargo section.
- Semi-trailer truck
- Semi
- 18-wheeler
- Articulated lorry (UK)
- Big rig
Note: As a compound noun, "tractor trailer" itself is not typically used in phrasal verbs. However, related verbs are used with its components. - To jackknife: (Verb) A dangerous situation where the trailer swings out at an acute angle to the tractor, resembling a folding pocket knife. - The icy road caused the tractor trailer to jackknife. - To drop a trailer / To hook a trailer: (Verb phrases) Actions performed by the tractor. "Dropping" means disconnecting from a trailer; "hooking" means connecting to one. - The driver dropped the empty trailer at the depot before hooking a loaded one.
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a truck consisting of a tractor and trailer together
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