hub

noun

ˈhəb 

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

• center
• mecca
• capital
• focus

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

Future outlook: The development aims to create a mixed-use, mixed-income community by putting housing near employment hubs and public transportation. —Miami Herald Archives, Miami Herald, 10 July 2025

That lets devices like bulbs, remotes and motion sensors pair with each other directly, with no hub or app needed. —Paul Lamkin, Forbes.com, 10 July 2025

Like in the United States, Australian campuses were once the hub of pro-Palestinian protests led by students who pitched tents demanding action to stop Israel’s assault on Gaza. —Hilary Whiteman, CNN Money, 10 July 2025

Across our footprint, 1,000+ founders activated in our business hubs—contributed, connected, and claimed space in the future of culture and commerce. —Essence Staff, Essence, 10 July 2025

Word History

Etymology

probably alteration of hob entry 2

First Known Use

1649, in the meaning defined at sense 1

Phrases Containing hub

• hub-and-spoke

Rhymes for hub

• bub
• club
• cub
• dub
• grub
• nub
• pub
• rub
• scrub
• shrub
• snub
• stub

Kids Definition

hub

noun

ˈhəb 

1

: the central part of a circular object (as a wheel)

2

: a center of activity

Medical Definition

hub

noun

ˈhəb 

: the enlarged base by which a hollow needle may be attached to a device (as a syringe)