Definitions for "SEMITRAILER"
Keywords:  tractor, trailer, dolly, towed, axles
a trailer having wheels only in the rear; the front is supported by the towing vehicle
A trailer having an axle or axles only at the rear. The front of the trailer is supported by the tractor fifth wheel. Before uncoupling the trailer from the tractor, a movable landing gear is lowered to support the front of the trailer. The trailer may be operated as a full trailer by using a trailer converter dolly in place of the fifth wheel.
A vehicle without motive power designed to be pulled or towed by a motor. Vehicle in which part of the trailer's load is supported by the power unit. See Trailer.