Appeal about hunt (7)
I believe the answer is:
request
'appeal' is the definition.
(I know that appeal is a more specific form of request)
'about hunt' is the wordplay.
'about' becomes 're' (regarding).
'hunt' becomes 'quest' (synonyms).
're'+'quest'='REQUEST'
(Other definitions for request that I've seen before include "Call for" , "Plea" , "Queer St (anag.)" , "Polite demand" , "Supplication" .)