What is another word for semi trailers?
Pronunciation: [sˈɛmi tɹˈe͡ɪləz] (IPA) 
Semi trailers are commonly known to be a type of trailer that is hauled by a semi truck or tractor. These trailers vary in size, shape and design, but they all serve the same purpose which is to haul and transport goods from one place to another. There are many synonyms for semi trailers, each with a slightly different meaning. Some of these synonyms include tractor-trailers, eighteen-wheelers, semi-trucks, big rigs, and articulated lorries. All these terms refer to the same type of vehicle and are commonly used in the trucking industry. No matter what you call them, semi trailers play a crucial role in the transportation of goods across America.
