1
: the central part of a circular object (such as a wheel or propeller)
spokes attached to the hub of the wheel
2
a
: a center of activity : focal point
The island is a major tourist hub.
b
: an airport or city through which an airline routes most of its traffic
c
: a central device that connects multiple computers on a single network (see network entry 1 sense 3b)
3
: a steel punch from which a working die (see die entry 2 sense 3a) for a coin or medal is made
Examples of hub in a Sentence
the hub of the city
She was at the hub of all the activity.
All of the airline's coast-to-coast flights pass through its hub.
The spokes attach to the hub of the wheel.
Recent Examples on the Web
This same line offers easy access to City Creek Center for local boutiques and shopping as well as the cultural hub of Temple Square, making a rental car largely unnecessary for exploring the downtown core.
—
Condé Nast, Condé Nast Traveler, 5 Mar. 2026
Including the existing building, new gym, play areas and outdoor sections, the overall size of the education hub would be 89,400 square feet, the proposal stated.
—George Avalos, Mercury News, 5 Mar. 2026
This year’s picks for the most welcoming cities on Earth run the gamut from historic towns in Europe to coastal cities in Asia, small cultural hubs around the world, and beyond.
—Lauren Dana Ellman, Travel + Leisure, 5 Mar. 2026
In Newport Beach, a sprawling aerospace and defense hub was converted into luxury homes three decades ago, and homeowners were only recently informed about residual toxic pollution.
—Tony Briscoe, Los Angeles Times, 5 Mar. 2026
See All Example Sentences for hub
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Condé Nast, Condé Nast Traveler, 5 Mar. 2026
Including the existing building, new gym, play areas and outdoor sections, the overall size of the education hub would be 89,400 square feet, the proposal stated.
—George Avalos, Mercury News, 5 Mar. 2026
This year’s picks for the most welcoming cities on Earth run the gamut from historic towns in Europe to coastal cities in Asia, small cultural hubs around the world, and beyond.
—Lauren Dana Ellman, Travel + Leisure, 5 Mar. 2026
In Newport Beach, a sprawling aerospace and defense hub was converted into luxury homes three decades ago, and homeowners were only recently informed about residual toxic pollution.
—Tony Briscoe, Los Angeles Times, 5 Mar. 2026
See All Example Sentences for hub
Cite this Entry
“Hub.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hub. Accessed 10 Mar. 2026.
Copy CitationKids Definition
hub
noun1
: the central part of a circular object (as a wheel)
2
: a center of activity
Medical Definition
hub
noun
: the enlarged base by which a hollow needle may be attached to a device (as a syringe)
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