Island monster back to enthral a land (7)
I believe the answer is:
'island' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how they can define each other.
'monster back to enthral a land' is the wordplay.
'monster' becomes 'orc' (fantasy creature).
'back' is a reversal indicator.
'to enthral a land' becomes 'atia' (I can't justify this - if you can you should believe this answer much more).
'orc' reversed gives 'cro'.
Can you help me to learn more?
(Other definitions for croatia that I've seen before include "European state" , "Republic in SE Europe, capital Zagreb" , "Adriatic nation" , "Balkan republic, capital Zagreb" , "Split country?" .)