Fine golf article (5)
I believe the answer is:
thing
'article' is the definition.
(both can mean an object)
'fine golf' is the wordplay.
'fine' becomes 'thin' (similar in meaning).
'golf' becomes 'g' (phonetic alphabet: alpha, bravo, charlie etc.).
'thin'+'g'='THING'
(Other definitions for thing that I've seen before include "Body" , "Unspecified object" , "Individual object" , "Night (anag)" , "Individual unit" .)