Staff not easily moved? (5)
I believe the answer is:
stick
'staff' is the definition.
(I've seen this before)
I don't 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 "Switch < put up" , "Baton; gum" , "See 2" , "Tolerate" , "Rod" .)