underground railway Definition

underground railroad, subway, underground, metro, taxi stand, transportation system, hypogeous, subway train, trolley car, subway station, permanent way, telpherage, service area, business district, tram, telpher, rail technology, railway, stational, railroad station, coalhole, city district, cable railway, commuter train, railroad, streetcar, station, platelayer, air shaft, commuter, storm cellar, airport terminal, pedestrian traffic, transit, viatecture, air terminal, underpass, tunnel, subterranean, train ticket, railway line, cyclone cellar, freight car, ticket booth, railroad car, bedroom community, rest area, staith, tramway, control tower, flag stop, street corner, railroad tie, bus, platform ticket, central business district, railroad train, bus terminal, coin slot, telephone box, inrail, telephone booth, bus depot, interposit, stathmograph, telephone pole, rail, pavement artist, telephone kiosk, safety island, yellow line, overground, corridor, antibusing, rapid transit, embus, transportation, lombard street, bystreet, monorail, slidometer, pedestrianize, road surface, tower of london, taxi, refrigerator car, mtr, downtown, pedestrian, terminus, air corridor, emergency exit, outstreet, statue of liberty, trolley, train set, straphanger, interurban, public toilet, ticket collector,