Wishy-washy golf article (5)
I believe the answer is:
thing
'article' is the definition.
(I've seen this before)
'wishy-washy golf' is the wordplay.
'wishy-washy' becomes 'thin' (both can mean weak or feeble).
'golf' becomes 'g' (phonetic alphabet: alpha, bravo, charlie etc.).
'thin'+'g'='THING'
(Other definitions for thing that I've seen before include "Object, artefact" , "Article" , "Individual object" , "A creature" , "Individual unit" .)