Identifying man fuddled with gin (6)
I believe the answer is:
naming
'identifying' is the definition.
('name' can be a synonym of 'identify')
'man fuddled with gin' is the wordplay.
'fuddled with' indicates anagramming the letters.
'man' mixed up with 'gin' gives 'NAMING'.
(Other definitions for naming that I've seen before include "Allotting term to" , "Identifying, citing" , "Titling" , "Calling" , "Conferring appellation on" .)