Definition of trolley
i. The grooved wheel, fixed in bearings at the end of a trolley pole, pressed upward in rolling contact with the overhead trolley wire to take off the electric current for operating the locomotive or other piece of motorized equipment. A trolley glider is frequently used in place of the wheel, making a sliding contact with the wire. Also called trolley wheel.
Ref: Jones, 1
ii. A low carriage, mounted on wheels, for carrying timber, supplies, and machines underground.
See Also: trawley, bogie
Ref: Nelson
Ref: Jones, 1
ii. A low carriage, mounted on wheels, for carrying timber, supplies, and machines underground.
See Also: trawley, bogie
Ref: Nelson