Subway
WordNet
noun
(1) An electric railway operating below the surface of the ground (usually in a city)
"In Paris the subway system is called the `metro' and in London it is called the `tube' or the `underground'"
(2) An underground tunnel or passage enabling pedestrians to cross a road or railway
WiktionaryText
Noun
- An underground railway, especially for mass transit of people in urban areas.
- A rapid transit system, regardless of the elevation of its right of way.
- underground walkway, tunnel for pedestrians (called pedestrian underpass in US).
Synonyms
- metro
- rapid transit
- tube
- underground
- underpass