pre corridor   [kawr-i-der, -dawr, kor-] a gallery or passage
connecting parts of a building; hallway. a passage into which
several rooms or apartments open. a passageway in a passenger
ship or railroad car permitting access to separate cabins or
compartments. a narrow tract of land forming a passageway, as
one connecting two major cities or one belonging to an inland
country and affording an outlet to the sea: the Polish Corridor.
a usually densely populated region characterized by one or more
well-traveled routes used by railroad, airline, or other
carriers: The Northeast corridor extends from Washington, D.C.,
to Boston. Aeronautics. a restricted path along which an
aircraft must travel to avoid hostile action, other air traffic,
etc. Aerospace. a carefully calculated path through the
atmosphere along which a space vehicle must travel after launch
or during reentry in order to attain a desired orbit, to avoid
severe acceleration and deceleration, or to minimize aerodynamic
heating.  1585–95; < Middle Frenc