Wheel centre (3)
I believe the answer is:
hub
(Other definitions for hub that I've seen before include "Focus" , "Centre or axis" , "Wheel's centre" , "Centre of activity" , "Focal point of activity" .)
I believe the answer is:
hub
(Other definitions for hub that I've seen before include "Focus" , "Centre or axis" , "Wheel's centre" , "Centre of activity" , "Focal point of activity" .)