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
The epidemic is believed to have killed at least 200 people, though experts have warned of a significant undercount of both deaths and cases, pointing to contagion reported in the main regional hubs including in neighboring Uganda.
—
Jeronimo Gonzalez, semafor.com, 25 May 2026
Check out the all new PLAY hub with puzzles, games and more!
—Nathan Diller, USA Today, 25 May 2026
This would save air travelers up to 4 hours compared to one-stop journeys via hubs such as Singapore Changi.
—Marisa Garcia, Forbes.com, 25 May 2026
There are few places to test for this Bundibugyo type in a region where clinics can run on generators and a major airport serving as a humanitarian hub has been in the hands of rebels for over a year.
—Justin Kabumba, Los Angeles Times, 25 May 2026
See All Example Sentences for hub
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Jeronimo Gonzalez, semafor.com, 25 May 2026
Check out the all new PLAY hub with puzzles, games and more!
—Nathan Diller, USA Today, 25 May 2026
This would save air travelers up to 4 hours compared to one-stop journeys via hubs such as Singapore Changi.
—Marisa Garcia, Forbes.com, 25 May 2026
There are few places to test for this Bundibugyo type in a region where clinics can run on generators and a major airport serving as a humanitarian hub has been in the hands of rebels for over a year.
—Justin Kabumba, Los Angeles Times, 25 May 2026
See All Example Sentences for hub
Cite this Entry
“Hub.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hub. Accessed 28 May. 2026.
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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