Real Dictionary

streetcar
countable noun: A streetcar is an electric vehicle for carrying people which travels on rails in the streets of a town.

streetcar in American English
a large coach or car on rails that provides public transportation along certain streets
noun: a public vehicle running regularly along certain streets, usually on rails, as a trolley car or trolley bus

streetcar in British English
noun: an electrically driven public transport vehicle that runs on rails let into the surface of the road, power usually being taken from an overhead wire