corridor

noun

1. A narrow hall or passage with rooms leading off it, as in a building or in a railway carriage.

   “There is an hour or two, after the passengers have embarked, which is disquieting and fussy.[…]Stewards, carrying cabin trunks, swarm in the corridors. Passengers wander restlessly about or hurry, with futile energy, from place to place.”

   “Eldridge closed the despatch-case with a snap and, rising briskly, walked down the corridor to his solitary table in the dining-car.”

   “My mind drifts now and then / Lookin' down dark corridors and wonders what might have been / Something's up ahead / Hey, should I keep this same direction or go back instead?”

2. A restricted tract of land that allows passage between two places.

   “In addition, there are two up and two down korridorzug ^([sic]) [Korridorzüge] of the O.B.B. which run through from Innsbruck to Reutte via the Mittenwald line, but which are "sealed" between Scharnitz through Garmisch-Partenkirchen as far as Ehrwald, carrying passengers only from Austria to Austria; the korridor thus refers to the corridor through Germany and not through the train.”

3. (historical, rare)The covered way lying round the whole compass of the fortifications of a place.
4. Airspace restricted for the passage of aircraft.
5. The land near an important road, river, railway line.

   “Main Street corridor”

   “Pike-Pine Corridor, Seattle”