Be loyal to one's staff? (5)
I believe the answer is:
stick
'staff?' is the definition.
(staff is a kind of stick)
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for stick that I've seen before include "Glue; piece of wood" , "See 2" , "Endure" , "School punishment once" , "Adhere; baton" .)