a tapered cylindrical pole of wood or metal, used to transfer electricity from a "live" overhead wire to the control and the electric traction motors of a tram or trolley bus.
trolley 1
noundomain: artefact
Princeton WordNet [ver.3.1]
English
Definition
a wheeled vehicle that runs on rails and is propelled by electricity
a tapered cylindrical pole of wood or metal, used to transfer electricity from a "live" overhead wire to the control and the electric traction motors of a tram or trolley bus.