Corridor

Pronunciation: k?r"r?-d?r or -d?r
n.

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