Addressed part of a wheel (5)
I believe the answer is:
spoke
This clue is a double definition.
'addressed' is the first definition.
('speak' can be a synonym of 'address')
'part of a wheel' is the second definition.
('spoke' is part of 'wheel')
(Other definitions for spoke that I've seen before include "gave a lecture" , "Radiating rod" , "Talked" , "Wheel's radial member" , "Bicycle wheel rod" .)