From Longman Dictionary of Contemporary Englishtractor-trailerˈtractor-ˌtrailer noun [countable] American English a large truck that has two parts, one small part in the front where the driver sits and a large part at the back where goods are carried
Examples from the Corpus
tractor-trailer• Outside, a tractor-trailer braked with a loud moan.• A sign advises big tractor-trailers not to use that stretch of highway.• To my left, the tractor-trailer is passing in the opposite direction, all the while pulling closer to my flank.• On his way to Apple one morning, Atkinson failed to notice that the tractor-trailer ahead of him was parked.• The deputies said they believe two tractor-trailers also hit the men. 