Country bringing down current queen (4)
I believe the answer is:
rani
'queen' is the definition.
(historical term for a Hindu queen)
'country bringing down current' is the wordplay.
I cannot really understand how this works, but
'current' could be 'i' (symbol for electric current) and 'i' is found in the answer.
The remaining letters 'ran' is a valid word which might be clued in a way I don't see.
This may be the basis of clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for rani that I've seen before include "Wife of a raja" , "Rajah's wife from Iran" , "Royal Indian female" , "Member of royal family" , "Raja's queen" .)