Shining ring inside worth a look (4)
I believe the answer is:
halo
'shining ring' is the definition.
'halo' can be an answer for 'ring' (synonyms). I'm not sure about the 'shining' bit.
'inside worth a look' is the wordplay.
'inside' indicates the answer is hidden within the clue.
'HALO' is hidden within 'worth a look'.
Can you help me to learn more?
(Other definitions for halo that I've seen before include "that could make one light-headed?" , "Disc of light" , "Sign of a saint" , "Imaginary circle over saint's head" , "Saintly ring" .)