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

Au Kam San, a Macao pro-democracy former lawmaker, was sentenced to 12½ years in prison after a closed-door trial that raised concerns about fairness in the Chinese casino hub's first national security case since the law was enacted in 2009. — Arkansas Online, 7 Nov. 2026

No more than 15 minutes away in a taxi, the island’s main creative hub is home to La Seu Cathedral, buzzy street markets, bohemian boutiques, and easy tapas eateries. — Condé Nast, Condé Nast Traveler, 7 Nov. 2026

Chicago builds quantum hub The arrival of System Two is part of a broader effort to position Illinois as a center for quantum technology and microelectronics. — Neetika Walter, Interesting Engineering, 7 Nov. 2026

Emirates’ half-year profits fell by two-thirds, with the Iran war keeping transit passengers away from Gulf hubs and the closure of the Strait of Hormuz sending jet fuel prices soaring. — semafor.com, 6 Nov. 2026

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)