Staff used motorcycles mostly (3)
I believe the answer is:
rod
'staff' is the definition.
(both can mean a stick or cane)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for rod that I've seen before include "Fishing implement" , "Baton, pole" , "An angler's stick" , "Long, straight stick" , "Straight, slender stick" .)