tractor-trailer
US /ˈtræk.tərˌtreɪ.lər/
UK /ˈtræk.tərˌtreɪ.lər/

1.
tir, autoarticolato
a truck that consists of a tractor and a trailer, used for hauling freight
:
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The tractor-trailer was loaded with goods for delivery.
Il tir era carico di merci per la consegna.
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A large tractor-trailer blocked the highway.
Un grande tir ha bloccato l'autostrada.