Meaning of HUB in English

hub /hʌb/ BrE AmE noun [countable]

[ Date: 1500-1600 ; Origin: Probably from ⇨ ↑ hob (1) ]

1 . the central and most important part of an area, system, activity etc, which all the other parts are connected to SYN centre

hub of

Birmingham is at the hub of Britain’s motorway network.

the commercial hub of the region

2 . the central part of a wheel to which the ↑ axle is joined

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.