Merriam-Webster Collegiate Dictionary - corridor

 noun  Etymology: Middle French, from Italian dialect (N Italy) ~e, from correre to run, from Latin currere — more at car  Date: 1719  1.  a. a passageway (as in a hotel or office building) into which compartments or rooms open  b. a place or position in which especially political power is wielded through discussion and deal-making was excluded from the ~s of power after losing the election  2. a usually narrow passageway or route: as  a. a narrow strip of land through foreign-held territory  b. a restricted lane for air traffic  c. a land path used by migrating animals  3.  a. a densely populated strip of land including two or more major cities the Northeast ~ stretching from Washington into New England — S. D. Browne  b. an area or stretch of land identified by a specific common characteristic or purpose a ~ of liberalism the city's industrial ~