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
Every style from walking sneakers to arch-supportive loafers are on sale within the shop’s Black Friday sale hub for up to 70 percent off, which only happens once a year.
—
Rylee Johnston, PEOPLE, 25 Nov. 2025
The monarch has committed to investing $1 trillion, largely from the Arab nation’s oil and natural gas reserves, to pivot his nation into becoming an AI data hub.
—Thomas Beaumont, Fortune, 25 Nov. 2025
The official indicated that the Russian progress in the eastern frontline city of Pokrovsk, which is a logistics hub for Ukraine, was not a positive sign for Kyiv's defensive prospects.
—Camilla Schick, CBS News, 25 Nov. 2025
The United States has tested a new way to expand its military drone operations in the western Pacific, as an MQ-9 Reaper launched and landed without a runway at Kadena Air Base in Japan, a front-line American air power hub near China and Taiwan.
—Ryan Chan, MSNBC Newsweek, 25 Nov. 2025
See All Example Sentences for hub
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Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
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Rylee Johnston, PEOPLE, 25 Nov. 2025
The monarch has committed to investing $1 trillion, largely from the Arab nation’s oil and natural gas reserves, to pivot his nation into becoming an AI data hub.
—Thomas Beaumont, Fortune, 25 Nov. 2025
The official indicated that the Russian progress in the eastern frontline city of Pokrovsk, which is a logistics hub for Ukraine, was not a positive sign for Kyiv's defensive prospects.
—Camilla Schick, CBS News, 25 Nov. 2025
The United States has tested a new way to expand its military drone operations in the western Pacific, as an MQ-9 Reaper launched and landed without a runway at Kadena Air Base in Japan, a front-line American air power hub near China and Taiwan.
—Ryan Chan, MSNBC Newsweek, 25 Nov. 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 28 Nov. 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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