Noun: tractor trailer
- A truck consisting of a tractor and trailer together
"The tractor trailer delivered goods across the country";
- trailer truck, trucking rig, rig [N. Amer], articulated lorry [Brit], semi [N. Amer, informal]
Derived forms: tractor trailers
Type of: lorry [Brit], motortruck [N. Amer], truck
Encyclopedia: Tractor trailer