hub
US /hʌb/
UK /hʌb/

1.
cubo
the central part of a wheel, rotating on or with the axle, and from which the spokes radiate
:
•
The bicycle wheel's hub was greased for smoother rotation.
O cubo da roda da bicicleta foi lubrificado para uma rotação mais suave.
•
The spokes connect from the rim to the hub.
Os raios conectam do aro ao cubo.
2.
centro, polo
the effective center of an activity, region, or network
:
•
London is a major financial hub.
Londres é um grande centro financeiro.
•
The airport serves as a regional travel hub.
O aeroporto serve como um centro de viagens regional.