noun
tractor-trailer; semi-trailer; 18-wheeler; articulated lorry
Wasei-eigo from English 'tractor-truck'. Refers to a large truck consisting of a tractor unit and a semi-trailer, commonly called a tractor-trailer or semi in North America, and an articulated lorry in the UK.
wasei-eigo (Japanese-coined English), from tractor-truck
高速道路で大きなトラクタトラックが走っている。
A big tractor-trailer is driving on the highway.