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
Great cities are hubs for great people, businesses and visitor experiences.
—
Diane Brady, Fortune, 29 Oct. 2025
Owners also gain full access to the Ritz-Carlton’s slate of amenities, too, including two professional golf courses, a fitness center, a sports hub, and an aquatic park.
—Demetrius Simms, Robb Report, 28 Oct. 2025
Linking hubs such as Oakland, Richmond, Oyster Point, and Redwood City with high-speed foiling ferries would put hundreds of thousands more workers within a 45-minute commute of San Francisco’s job centers, expanding housing supply and cutting emissions from car commutes across the Bay.
—Big Think, 28 Oct. 2025
The Geneva Watch Days saw the introduction of the TH-Carbonspring, a patented proprietary carbon hairsprings innovation a decade in the making by the Tag Heuer Lab in-house research and development hub.
—Lily Templeton, Footwear News, 28 Oct. 2025
See All Example Sentences for hub
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Diane Brady, Fortune, 29 Oct. 2025
Owners also gain full access to the Ritz-Carlton’s slate of amenities, too, including two professional golf courses, a fitness center, a sports hub, and an aquatic park.
—Demetrius Simms, Robb Report, 28 Oct. 2025
Linking hubs such as Oakland, Richmond, Oyster Point, and Redwood City with high-speed foiling ferries would put hundreds of thousands more workers within a 45-minute commute of San Francisco’s job centers, expanding housing supply and cutting emissions from car commutes across the Bay.
—Big Think, 28 Oct. 2025
The Geneva Watch Days saw the introduction of the TH-Carbonspring, a patented proprietary carbon hairsprings innovation a decade in the making by the Tag Heuer Lab in-house research and development hub.
—Lily Templeton, Footwear News, 28 Oct. 2025
See All Example Sentences for hub
Cite this Entry
“Hub.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hub. Accessed 4 Nov. 2025.
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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