trailer - definition in the American English Dictionary - Cambridge Dictionaries Online

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trailer

noun [C]  us   /ˈtreɪ·lər/

trailer noun [C] (VEHICLE)

a vehicle without an engine, often in the form of a flat frame or a container, that can be pulled by another vehicle A trailer is also a house on wheels that can be moved by pulling it: We bought a trailer for camping trips. A trailer is also a mobile home

trailer noun [C] (ADVERTISEMENT)

an advertisement for a movie, often showing a few, brief parts of it
(Definition of trailer from the Cambridge Academic Content Dictionary © Cambridge University Press)
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