Talked about part of a wheel (5)
I believe the answer is:
spoke
I believe this is a double definition.
'talked' is the first definition.
('speak' can be a synonym of 'talk')
'part of a wheel' is the second definition.
(I know that spoke is part of the wheel)
'about' acts as a link.
(Other definitions for spoke that I've seen before include "Radiating rod" , "gave a lecture" , "biker's bar" , "Rung" , "Radius" .)