Meaning of semitrailer

sem•i•trail•er

Pronunciation: (sem'i-trā"lur), [key]
— n.
  1. Also calleda detachable trailer for hauling freight, with wheels at the rear end, the forward end being supported by the rear of a truck tractor when attached. Cf.
  2. tractor-trailer.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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