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| hub [ hub ] (plural hubs) |
noun |
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| Definition: |
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1. central part: the central part of a wheel or a similar rotating device such as a propeller
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2. center of activity: a place that is a center of activity or interest
  the region's financial hub
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3. central airport: a central airport that passengers can fly to from smaller local airports in order to catch an international or long-distance flight
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| [Early 16th century. Probably alteration of hob1] |
