Young Edward is back inside (4)
I believe the answer is:
side
'inside' is the definition.
The answer and definition can be both locations as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'young edward is back' is the wordplay.
'young edward' becomes 'ed' (short for Edward. I am not sure about the 'young' bit.).
'back' says the letters should be written in reverse.
'ed'+'is'='edis'
'edis' back-to-front is 'SIDE'.
Can you help me to learn more?
(Other definitions for side that I've seen before include "camp" , "Face - team" , "TV channel" , "Position to the right or left of" , "part" .)