Wind around island makes for poor hearing (8)
I believe the answer is:
mistrial
'hearing' is the definition.
(I have seen 'Defective hearing ' mean 'mistrial' so perhaps 'hearing' could also mean 'mistrial')
'wind around island makes for poor' is the wordplay.
I cannot quite see how this works, but
'island' could be 'is' (abbreviation) and 'is' is found within the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for mistrial that I've seen before include "Invalid hearing" , "Court procedure made void by error" , "Voided legal case" , "Botched case in court" , "Inconclusive or invalid court proceedings" .)