corridor

noun5

1. •
   a long space with walls on both sides, leading from one room to another inside a building or a train

   • Eldridge closed the despatch-case with a snap and, rising briskly, walked down the corridor to his solitary table in the dining-car. — 1931
2. •
   A restricted tract of land that allows passage between two places.
3. •
   Airspace restricted for the passage of aircraft.
4. •
   The land near an important road, river, railway line.
5. •
   (rare, historical) The covered way lying round the whole compass of the fortifications of a place.