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
Synonyms
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
In addition to the earlier ground stop, American was also facing thunderstorms in the Dallas-Fort Worth area, where its biggest hub is located.
—
Leslie Josephs, CNBC, 24 Dec. 2024
Although China produces a significant number of AI graduates, competition with global tech hubs and a diverging geopolitical reality, can deter talent from staying or returning to China.
—Mark Greeven, Forbes, 23 Dec. 2024
King Charles' grandfather, King George VI, laid the foundation stone when the hospital was rebuilt in 1928, and though the medical hub shuttered in 2005, the chapel remains open to the public today as a place of meditation.
—Janine Henni, People.com, 23 Dec. 2024
The Stevens Creek Promenade project, a few blocks from the Westfield Valley Fair commercial hub and Santana Row, is undergoing a re-thinking.
—George Avalos, The Mercury News, 21 Dec. 2024
See all Example Sentences for hub 
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Leslie Josephs, CNBC, 24 Dec. 2024
Although China produces a significant number of AI graduates, competition with global tech hubs and a diverging geopolitical reality, can deter talent from staying or returning to China.
—Mark Greeven, Forbes, 23 Dec. 2024
King Charles' grandfather, King George VI, laid the foundation stone when the hospital was rebuilt in 1928, and though the medical hub shuttered in 2005, the chapel remains open to the public today as a place of meditation.
—Janine Henni, People.com, 23 Dec. 2024
The Stevens Creek Promenade project, a few blocks from the Westfield Valley Fair commercial hub and Santana Row, is undergoing a re-thinking.
—George Avalos, The Mercury News, 21 Dec. 2024
See all Example Sentences for hub
Dictionary Entries Near hub
Cite this Entry
“Hub.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hub. Accessed 31 Dec. 2024.
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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