Definition of hub
1 : the central part of a circular object (as a wheel or propeller) <spokes attached to the hub of the wheel>
2a : 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 trafficc : a central device that connects multiple computers on a single network (see 1network 3b)
3 : a steel punch from which a working die (see 2die 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.
Origin and Etymology of hub
probably alteration of 2hob
First Known Use: 1649
HUB Defined for English Language Learners
Definition of hub for English Language Learners
: the central and most active part or place
: the airport or the city through which an airline sends most of its flights
: the center of a wheel, propeller, fan, etc.
HUB Defined for Kids
Definition of hub for Students
1 : the center of a wheel, propeller, or fan
2 : a center of activity <The port is the island's hub.>
Medical Definition of hub
: the enlarged base by which a hollow needle may be attached to a device (as a syringe)
Seen and Heard
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