noun

hub

hub, centre, focal point

The airport is a major hub for international travel.

The airport is a major hub for international travel.

The hub of the wheel needs to be replaced.

The hub of the wheel needs to be replaced.

a hub of ((sth.)) a centre of (an activity/industry) The city is a hub of innovation.

Synonyms: centre, core, pivot, nexus

From Middle English 'hubbe', meaning the nave of a wheel. Its origin is uncertain.

Picture a bicycle wheel: all the spokes connect to the central 'hub'. This image applies to airports, networks, etc.

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