| subway | |
| 1. n. (North America, Scotland) An underground railway, especially for mass transit of people in urban areas. (c, en, Rail transportation) | |
| 2. n. (US) A rapid transit system, regardless of the elevation of its right of way. | |
| 3. n. (British) An underground walkway, tunnel for pedestrians (called pedestrian underpass in US). | |
| 4. n. An underground route for pipes, sewers, etc. | |
| 5. v. (intransitive, US, informal) To travel by underground railway. | |
