Criminal from American wing (8)
I believe the answer is:
offender
'criminal' is the definition.
(I've seen this before)
'from american wing' is the wordplay.
'from' becomes 'of' (of can mean from or belonging to).
'american wing' becomes 'fender' (synonyms. I am not sure about the 'american' bit.).
'of'+'fender'='OFFENDER'
Can you help me to learn more?
(Other definitions for offender that I've seen before include "Committer of illegal act" , "Transgressor, lawbreaker" , "Criminal" , "Culprit" , "Delinquent" .)