Definition of hub in English:

hub

noun

  • 1The central part of a wheel, rotating on or with the axle, and from which the spokes radiate.

    • ‘Remove your wheels, and wipe them down, since the dirt gets lodged in the little nooks and crannies of the wheel hubs and spokes.’
    • ‘There is a farmer's tip/bonfire of burnt plastic, wool, stock mark spray, and wheel hubs.’
    • ‘We stop to flip up our windshield, free the front axle hubs, and shift to high-range.’
    • ‘In all cases these wheels appear to be solid wooden discs with a thickened hub.’
    • ‘The amount of power dissipated in even a standard steel ball bearing hub is quite small.’
    • ‘Dirt roads also eat the magnets, which activate the trailer brakes in the hubs of the trailer axle.’
    • ‘Key components, including the rotor blades, gearboxes and rotor hubs, will be built at the company's British base.’
    • ‘Instead, a few species are like hubs, with spokes radiating out to the other species.’
    • ‘Eventually though, I end up with shredded hubs, broken spokes and cracked rims.’
    • ‘With a great leap, he landed on the hub of the wheel and grabbed the flapping reins.’
    • ‘The barrel of the cannon passed through the reduction gearbox and the propeller hub.’
    • ‘Close inspection showed a catastrophic failure of two of the main wheel hub bolts.’
    • ‘If we do, there is the danger that the hub nuts will come off and then the wheels drop off.’
    • ‘The hub of the wheel is also the largest single steel casting ever made.’
    • ‘Ventilation is often achieved by using wheel hubs from clapped-out vehicles as protective grilles.’
    • ‘The front wheel doubles as a paddle wheel and has no hub but instead tracks along its rim.’
    • ‘Rocker arms and clutch hubs are examples of automotive production parts that are surface hardened by induction.’
    • ‘What is the durability data for ceramic bearings in bicycle hubs?’
    • ‘Now we are keeping that going, and working on some other parts that are new to us - pedals, cranks, hubs and wheels.’
    • ‘The legs of the standard are apart sufficiently to take the outer end of the wheel hub, as shown.’
    pivot, axis, fulcrum, centre, centre point
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  • 2The effective centre of an activity, region, or network:

    ‘the city has always been the financial hub of the country’
    ‘the kitchen was the hub of family life’
    • ‘For centuries this quaint location has been a hub of activity; that of natural forces and that of man.’
    • ‘The ground floor is the hub of the activity as it is the main banking hall.’
    • ‘Today, the area around the vast pond is the hub of commercial activity in the city.’
    • ‘Services can go out from a central hub, to the communities needing them, when they need them.’
    • ‘It serves to provide a central hub for documents and information related to biodiversity.’
    • ‘We should find more hubs and semi - hubs in the discussions forums network then at other networks.’
    • ‘Clubs need to be innovative, family friendly and at the hub of local activity.’
    • ‘They were the hubs around which the wheels of the villages revolved.’
    • ‘He said that he expected that the region would become an international hub of tourism.’
    • ‘The prosecution had opened the case that the defendants were at the hub and that others were the spokes of the conspiracy.’
    • ‘Using this method an eight-wire connection runs from each machine to a central hub.’
    • ‘The cable was one of the main links between Croydon and Telehouse, the telecoms hub in central London.’
    • ‘The Government High School becomes a hub of activities on Saturday and Sunday evenings.’
    • ‘Leipzig was one of the earliest book publishing hubs in both Germany and Central Europe.’
    • ‘Traffic was halted in business hubs in the central, southern and northern parts of the city.’
    • ‘Even as she got older and became physically less able, she was still as sharp as a button and the central hub for all of us.’
    • ‘The way is now clear to increase car-parking and make the centre the hub of Carlow town.’
    • ‘He said Thailand simply attracted a lot of tourists because of its position as a hub of the region.’
    • ‘This playgroup also acts a central social hub for mothers to make contact, share problems and ideas.’
    centre, centre of activity, core, heart, focus, focal point, middle, nucleus, kernel, nerve centre
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    1. 2.1 A central airport or other transport facility from which many services operate:
      ‘the airport authority's policy promotes Manchester as an international hub’
      ‘the city's major transportation hub for bus and rail’
      [as modifier] ‘major hub airports have grown up all over the world’
      • ‘The quayside location is convenient to a range of city centre employment and transport hubs, with Tara Street and Barrow Street Dart stations located nearby.’
      • ‘Until their CEO climbed into the cockpit in 1997, Air France had done little to develop its Paris hub.’
      • ‘Circular Quay is the transportation hub of Sydney Harbour.’
      • ‘But, increasingly, even the staunchest environmentalists are advocating plans to build up cities near transit hubs in order to curb sprawl and limit emissions of greenhouse gases.’
      • ‘We're a neighborhood restaurant that draws from all over the city because we're directly across the street from the public transit hub.’
      • ‘This is one of the nation's busiest transit hubs.’
      • ‘Australia needs to develop a northern aviation hub to capitalise on regional tourism and transport opportunities.’
      • ‘At present, London is the world's chief aviation hub.’
      • ‘The transportation hub is financed chiefly with a $1.9 billion grant from the federal agency.’
      • ‘The study urges communities to concentrate growth around urban and town centers and transportation hubs, a policy known as smart growth.’
      • ‘Meanwhile, flood waters trapped commuters at City Gate, since the roads into the transit hub remained impassable for hours even after the rains had stopped.’
      • ‘Another transit hub, Sunny Bay Station in Hong Kong, takes advantage of sea breezes to cool the building.’
      • ‘The carriers were accused of fixing prices on fares through 34 hub airports.’
      • ‘Air-Scotland's plans to develop a hub in Scotland require considerable investment.’
      • ‘All flights, including domestic, charter and cargo, will shift to the new airport, which will play a major role in boosting the role of Thailand as a regional aviation hub.’
      • ‘We look forward to developing another hub that would service our island.’
      • ‘Historically, major hub airports have grown up all over the world on the back of airlines which were dominant national flag carriers.’
      • ‘Plymouth is a transportation hub for the South West of England.’
      • ‘Johannesburg's transport hub is in the inner city: about 800,000 commuters pass through it every day.’
      • ‘The creation of a modern accessible transport hub is an essential part of the overall redevelopment of Sheffield city centre.’

Origin

Early 16th century (denoting a shelf at the side of a fireplace used for heating pans): of unknown origin (compare with hob).

Pronunciation:

hub

/hʌb/