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
Others are finding elegant endings, like Links Hall, which ceased operations this summer after nearly four decades as a hub for small, experimental performance.
—
Lauren Warnecke, Chicago Tribune, 3 Sep. 2025
Other deaths reported on Tuesday included five people who were in a line waiting for food at an aid distribution hub in southern Gaza, Palestinian medics said.
—Emily Rose, USA Today, 3 Sep. 2025
The machine, the largest globally in both capacity and size, features a blade wheel diameter of more than 310 meters (1,107 feet) and a hub height of 185 meters (607 feet).
—Neetika Walter, Interesting Engineering, 2 Sep. 2025
The comments backed other administration officials in recent weeks, that the South American country is a key transit hub for cocaine.
—Dan Gooding
gabe Whisnant, MSNBC Newsweek, 2 Sep. 2025
See All Example Sentences for hub
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Lauren Warnecke, Chicago Tribune, 3 Sep. 2025
Other deaths reported on Tuesday included five people who were in a line waiting for food at an aid distribution hub in southern Gaza, Palestinian medics said.
—Emily Rose, USA Today, 3 Sep. 2025
The machine, the largest globally in both capacity and size, features a blade wheel diameter of more than 310 meters (1,107 feet) and a hub height of 185 meters (607 feet).
—Neetika Walter, Interesting Engineering, 2 Sep. 2025
The comments backed other administration officials in recent weeks, that the South American country is a key transit hub for cocaine.
—Dan Gooding
gabe Whisnant, MSNBC Newsweek, 2 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 10 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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