An old queen falls in Africa (8)
I believe the answer is:
victoria
This could be a double definition.
'an old queen falls' is the first definition.
'Victoria' can be an answer for 'falls' (Victoria Falls is an example). I am not certain of the 'an old queen' bit.
'in africa' is the second definition.
('Victoria' is part of 'africa')
Can you help me to learn more?
(Other definitions for victoria that I've seen before include "One of the Beckhams" , "I will be good she said" , "State < > carriage" , "Tree; part of hand" , "Wood" .)