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
Check out the all new PLAY hub with puzzles, games and more!
—
Maggie Menderski, Louisville Courier Journal, 17 Dec. 2025
But part of that hub, if renderings become reality, cover the nearby neighborhood of Steeleberry Acres.
—Charlotte Observer, 16 Dec. 2025
With just one app, riders can get to the grocery store, a doctor's appointment, school or connect to major transit hubs like Golden Glades, where Tri-Rail provides access to Broward and Palm Beach counties as well as downtown Miami.
—Chelsea Jones, CBS News, 16 Dec. 2025
Competition among regional capitals to emerge as an international finance hub is still intense, with no city yet managing to take the crown.
—Manal Albarakati, semafor.com, 16 Dec. 2025
See All Example Sentences for hub
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Maggie Menderski, Louisville Courier Journal, 17 Dec. 2025
But part of that hub, if renderings become reality, cover the nearby neighborhood of Steeleberry Acres.
—Charlotte Observer, 16 Dec. 2025
With just one app, riders can get to the grocery store, a doctor's appointment, school or connect to major transit hubs like Golden Glades, where Tri-Rail provides access to Broward and Palm Beach counties as well as downtown Miami.
—Chelsea Jones, CBS News, 16 Dec. 2025
Competition among regional capitals to emerge as an international finance hub is still intense, with no city yet managing to take the crown.
—Manal Albarakati, semafor.com, 16 Dec. 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 17 Dec. 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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