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Of or being a system of distribution, as of goods, passengers, or data, in which the items being distributed are routed into and out of a central location.
(Aeronautics) (modifier) denoting a method of organizing intercontinental air traffic in which one major airport is used as a feeder for local airports. Sometimes shortened to: hub
of or designating a system of air transportation by which local flights carry passengers to one major regional airport where they can board long-distance or other local flights for their final destinations.