Metro's an abbreviation of metropolitan, and's the name of many products and services relating to urban areas, in particular rapid transit rail systems. Public transport In Rail (rapid transit): A Metro's a rapid transit rail system, also known as a subway or underground For individual metro systems, see the list of metro systems In Rail (other): METRO Light Rail (Phoenix), in the Phoenix Metropolitan Area, Arizona Tranz Metro, commuter rail in Wellington, New Zealand Manchester Metrolink… (More on Metro)