Hub

/hˈʌb/

/ˈhəb/

Hub

the central part of a car wheel (or fan or propeller etc) through which the shaft or axle passes

a center of activity or interest or commerce or transportation; a focal point around which events revolve

a central station, airport, etc. that provides passengers with many services

Examples

1. The wheel of the bicycle had a hub at its center.

2. London is the capital city of the United Kingdom and a major cultural and economic hub.

3. Some people are hubs.

4. This hub coordinates devices behind the meter for that customer.