Definitions
1.NounAn overhead rail forming a track on which a trolley runs to convey a load, as in a shop.
2.NounA street railway laid in the streets of a town or city, or an interurban railway for local traffic, on which cable cars, or trolley cars, etc., are used, in distinction from an extended railway line for trains.
3.NounA grooved rail (one of at least two) laid in a street for trams to run on. Ordinary rails are used on off-street (reserved track) sections of tramways.