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 of hub

• 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

Most recently, the CBS News Planet Instagram page – a social hub for CBS News and Stations' climate content – won an Anthem Award for Sustainability, Environment & Climate. —CBS News, 18 Nov. 2025

The bridge – a vital artery for traffic heading into the Port of Baltimore and a major hub for imports and exports of commodities – fell apart after a cargo ship hit one of its pillars in the early hours of March 26, 2024. —Michelle Watson, CNN Money, 18 Nov. 2025

Check out the all new PLAY hub with puzzles, games and more! —Endia Fontanez, AZCentral.com, 18 Nov. 2025

The grocer previously cut three of the delivery hubs in 2024 - in markets where Kroger didn't have a strong store presence. —Alexander Coolidge, Cincinnati Enquirer, 18 Nov. 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)