Films about golfer Ernie (5)
I believe the answer is:
reels
'films' is the definition.
(I know this)
'about golfer ernie' is the wordplay.
'about' becomes 're' ('re' means regarding or about).
'golfer ernie' becomes 'els' (I've seen this in another clue).
're'+'els'='REELS'
(Other definitions for reels that I've seen before include "Old film parts" , "Spools" , "Rolls of movie film" , "Staggers about in lively dances" , "Totters" .)