corridor

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. A narrow hallway, passageway, or gallery, often with rooms or apartments opening onto it.
2. n. A tract of land forming a passageway, such as one that allows an inland country access to the sea through another country.
3. n. A restricted tract of land for the passage of trains.
4. n. Restricted airspace for the passage of aircraft.
5. n. The restricted path followed by a spacecraft on a particular mission.
6. n. A thickly populated strip of land connecting two or more urban areas: the Boston-Washington corridor.
7. idiom. corridors of power A place in which powerful leaders work and rule.

Century Dictionary and Cyclopedia

1. n. In architecture, a gallery or passage in a building.
2. n. In fortification, a covered way carried round the whole compass of the fortifications of a place. Wilhelm, Mil. Dict.
3. n. See the extract.
4. n. In car-building, a narrow passage between the side of a sleeping-, dining-, stateroom- or other car and a partition which incloses the staterooms, lavatory, kitchen, or other apartment.

Wiktionary

1. n. A narrow hall or passage with rooms leading off it, for example in railway carriages (see Wikipedia).
2. n. A restricted tract of land that allows passage between two places.
3. n. Airspace restricted for the passage of aircraft.

GNU Webster's 1913

1. n. (Arch.) A gallery or passageway leading to several apartments of a house.
2. n. (Fort.), rare The covered way lying round the whole compass of the fortifications of a place.
3. n. any relatively narrow passageway or route, such as a strip of land through a foreign territory.
4. n. a densely populated stretch of land.

WordNet 3.0

1. n. an enclosed passageway; rooms usually open onto it