What one thinks of putting a ring on the wing (7)
I believe the answer is:
opinion
'what one thinks of' is the definition.
I can't tell whether this definition defines the answer.
'a ring on the wing' is the wordplay.
'a ring' becomes 'o' (letter resembling a ring).
'on' means one lot of letters go next to another.
'the wing' becomes 'pinion' (synonyms).
'o'+'pinion'='OPINION'
'putting' is the link.
Can you help me to learn more?
(Other definitions for opinion that I've seen before include "Estimation" , "Belief or conviction" , "Assessment" , "impression" , "View, barrister's advice" .)