Golf club parking, say (6)
I believe the answer is:
putter
'golf club' is the definition.
(I've seen this before)
'parking say' is the wordplay.
'parking' becomes 'p'.
'say' becomes 'utter' (I've seen this before).
'p'+'utter'='PUTTER'
(Other definitions for putter that I've seen before include "Club to use on the green" , "Type of golf club" , "Club used on the green" , "Golf club used on greens" , "Golf-club" .)