[count]

1 . the central and most active part or place

• the hub of the city
• The island is a major tourist hub. [=a place where many tourists go]
• She was at the hub of all the activity.

2 . the airport or the city through which an airline sends most of its flights

• All of the airline’s coast-to-coast flights pass through its hub.

3 . the center of a wheel, propeller, fan, etc.

• The spokes attach to the hub of the wheel.