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
Check out the all new PLAY hub with puzzles, games and more!
—
Amaris Encinas, USA Today, 19 May 2026
The first to be affected by the walkout — the LIRR's first since a two-day strike in 1994 — were the many sports fans who wanted to see the Yankees and Mets battle or the Knicks’ playoff run at Madison Square Garden, which is located directly above the railroad’s Penn Station hub in Manhattan.
—ABC News, 18 May 2026
The 13,200 square foot hub will be used to enhance security and utilize artificial intelligence (AI) to streamline airport operations.
—Morgan Rynor, CBS News, 18 May 2026
The Front Porch Portal functions as a mobile-friendly, digital hub where students can check financial aid, grades, housing information, schedules, deadlines, campus events, and support services without having to navigate multiple disconnected systems.
—Marybeth Gasman, Forbes.com, 18 May 2026
See All Example Sentences for hub
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Amaris Encinas, USA Today, 19 May 2026
The first to be affected by the walkout — the LIRR's first since a two-day strike in 1994 — were the many sports fans who wanted to see the Yankees and Mets battle or the Knicks’ playoff run at Madison Square Garden, which is located directly above the railroad’s Penn Station hub in Manhattan.
—ABC News, 18 May 2026
The 13,200 square foot hub will be used to enhance security and utilize artificial intelligence (AI) to streamline airport operations.
—Morgan Rynor, CBS News, 18 May 2026
The Front Porch Portal functions as a mobile-friendly, digital hub where students can check financial aid, grades, housing information, schedules, deadlines, campus events, and support services without having to navigate multiple disconnected systems.
—Marybeth Gasman, Forbes.com, 18 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 21 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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