Different aim, say - returning reflection (5)
I believe the answer is:
image
'reflection' is the definition.
(I've seen this in another clue)
'different aim say returning' is the wordplay.
'different' indicates an anagram (letters placed in a different order).
'say' becomes 'eg' (both can mean for example).
'returning' says the letters should be written backwards.
'eg' backwards is 'ge'.
'aim' is an anagram of 'ima'.
'ima'+'ge'='IMAGE'
(Other definitions for image that I've seen before include "Figure (of speech?)" , "public perception" , "Picture; simile" , "Copy" , "Visible impression" .)