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tractor-trailer

noun [C]
 
 
/ˌtræk.təˈtreɪ.lər/ US  /-tɚˈtreɪ.lɚ/

Definition

US for juggernautTrucks, vans and caravans
(Definition of tractor-trailer noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of tractor-trailer