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
Synonyms
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
These targets include airfields, military plants, ammunition depots and warehouses, and also oil hubs and refineries, which have supplied President Vladimir Putin's military with fuel in the ongoing conflict.
—
David Faris, Newsweek, 3 Feb. 2025
Now that the four organizations have formerly merged their economic development efforts, the alliance is looking to start a number of initiatives throughout this year to speed up Aurora’s transformation into an innovation hub, according to a news release about the launch event.
—R. Christian Smith, Chicago Tribune, 3 Feb. 2025
The collision has renewed concerns about the area's level of air traffic congestion, which leaves little room for error in the airspace above major transport hubs that serve the nation's capital region.
—Emma Bowman, NPR, 2 Feb. 2025
The plane crashed near the Roosevelt Mall at Cottman Avenue and Roosevelt Boulevard, a busy hub with dozens of businesses and hundreds of homes.
—Minnah Arshad, USA TODAY, 1 Feb. 2025
See all Example Sentences for hub 
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David Faris, Newsweek, 3 Feb. 2025
Now that the four organizations have formerly merged their economic development efforts, the alliance is looking to start a number of initiatives throughout this year to speed up Aurora’s transformation into an innovation hub, according to a news release about the launch event.
—R. Christian Smith, Chicago Tribune, 3 Feb. 2025
The collision has renewed concerns about the area's level of air traffic congestion, which leaves little room for error in the airspace above major transport hubs that serve the nation's capital region.
—Emma Bowman, NPR, 2 Feb. 2025
The plane crashed near the Roosevelt Mall at Cottman Avenue and Roosevelt Boulevard, a busy hub with dozens of businesses and hundreds of homes.
—Minnah Arshad, USA TODAY, 1 Feb. 2025
See all Example Sentences for hub
Dictionary Entries Near hub
Cite this Entry
“Hub.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hub. Accessed 10 Feb. 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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