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English definition of “hub”

hub

noun [C] uk   /hʌb/ us  

hub noun [C] (CENTRAL PART)

the central or main part of something where there is most activity: The City of London is the hub of Britain's financial world. The computer department is at the hub of the company's operations.Places and locationsUnpleasant placesCentres of objects

hub noun [C] (WHEEL)

the central part of a wheel into which the spokes (= bars connecting the central part to the outer edge of the wheel) are fixedThe exterior of vehiclesMachine parts
(Definition of hub from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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