Expecting to relinquish power for ruling (7)
I believe the answer is:
regnant
'for ruling' is the definition.
(as in a queen regnant, a queen who rules by birth)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for regnant that I've seen before include "Ruling" , "(Queen) in her own right" , "Current" , "exercising authority" , "Reigning" .)