Defensive structure great for Scots hero (7)
I believe the answer is:
wallace
'scots hero' is the definition.
'wallace' can be an answer for 'hero' (I have seen 'Scottish hero' mean 'wallace' so perhaps 'hero' could also mean 'wallace'). I'm unsure of the 'scots' bit.
'defensive structure great' is the wordplay.
'defensive structure' becomes 'wall' (wall is a kind of defensive structure).
'great' becomes 'ace' (both can mean a talented person).
'wall'+'ace'='WALLACE'
'for' acts as a link.
Can you help me to learn more?
(Other definitions for wallace that I've seen before include "Alfred Russel ---, naturalist" , "William --, Scottish military leader" , "Scottish champion" , "Star of 'The Wrong Trousers'" , "Scottish patriot" .)