(625 ILCS 5/1-187)
(from Ch. 95 1/2, par. 1-187)
Every vehicle without motive power, other than a pole trailer, designed
for carrying persons or property and for being drawn by a motor vehicle and
so constructed that some part of its weight and that of its load rests upon
or is carried by another vehicle.
(Source: P.A. 76-1586.)