semitrailer

[ sem-i-trey-ler ]
/ ˈsɛm ɪˌtreɪ lər /

noun

Also called semi. a 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.Compare full trailer.

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Origin of semitrailer

First recorded in 1915–20; semi- + trailer
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for semitrailer

semitrailer
/ (ˌsɛmɪˈtreɪlə) /

noun

a type of trailer or articulated lorry that has wheels only at the rear, the front end being supported by the towing vehicle
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012