noun A trolley pole; a single-pole device for collecting electrical current from an overhead electrical line, normally for a tram/streetcar or a trolleybus.
noun A streetcar or light train.
noun A light rail, tramway, trolleybus or streetcar system.
noun A truck from which the load is suspended in some kinds of cranes.
noun A truck which travels along the fixed conductors in an electric railway, and forms a means of connection between them and a railway car.