The Sun turns traitors around (4)
I believe the answer is:
star
'the sun' is the definition.
(I've seen this before)
'traitors around' is the wordplay.
'traitors' becomes 'rats' (rat can mean a traitor).
'around' shows that the letters should be reversed in order.
'rats' backwards is 'STAR'.
'turns' acts as a link.
I am not very happy about this link. It may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for star that I've seen before include "Celebrity - heavenly body" , "One at the top of the bill" , "Brilliant person" , "Celestial point of light" , "Glamorous celebrity" .)