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
Shenzhen, China’s southern tech hub located north of Hong Kong, has ambitious plans to become home to the world’s largest indoor ski facility with the opening of the massive Qianhai Snow World before the end of this year.
—
Russell Flannery, Forbes.com, 10 Sep. 2025
The club also was the hub for Black political and community leaders before closing in 2016 for repairs.
—Catherine Muccigrosso, Charlotte Observer, 10 Sep. 2025
However, Prince William is scheduled to be in Cardiff, Wales, 150 miles away, to visit a pioneering new mental health hub launching at Principality Stadium.
—Stephanie Petit, PEOPLE, 9 Sep. 2025
For decades, one Downing Street townhouse was a convivial hub for family, friends, and people in the arts.
—Abby Montanez, Robb Report, 9 Sep. 2025
See All Example Sentences for hub
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Russell Flannery, Forbes.com, 10 Sep. 2025
The club also was the hub for Black political and community leaders before closing in 2016 for repairs.
—Catherine Muccigrosso, Charlotte Observer, 10 Sep. 2025
However, Prince William is scheduled to be in Cardiff, Wales, 150 miles away, to visit a pioneering new mental health hub launching at Principality Stadium.
—Stephanie Petit, PEOPLE, 9 Sep. 2025
For decades, one Downing Street townhouse was a convivial hub for family, friends, and people in the arts.
—Abby Montanez, Robb Report, 9 Sep. 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 14 Sep. 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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