Topic of citizen in a monarchy (7)
I believe the answer is:
subject
This could be a double definition.
'topic' is the first definition.
(I know that topic can be written as subject)
'citizen in a monarchy' is the second definition.
'subject' can be an answer for 'citizen' (I've seen this before). I'm unsure of the 'in a monarchy' bit.
'of' acts as a link.
Can you help me to learn more?
(Other definitions for subject that I've seen before include "guinea pig" , "One is under the authority of royalty" , "Theme, topic" , "One owing allegiance to monarch" , "Branch of knowledge" .)