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

This year, JetBlue is also making the Fort Lauderdale airport a hub this year, scheduling flights so arriving travelers have ample options to connect elsewhere. — Vinod Sreeharsha, Miami Herald, 16 Oct. 2026

Granite counters and a mini-split air-conditioning unit round out the room, which acts like a hub, connecting to multiple other spaces. — New Atlas, 16 Oct. 2026

Backyards became overflow living rooms, remote offices and social hubs, pushing outdoor design past occasional entertaining into daily utility. — Lauren Schuster, Kansas City Star, 16 Oct. 2026

The analyst said that will help those companies that already own the platforms and daily productivity hubs that users work on. — Sarah Min, CNBC, 16 Oct. 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)