Parking, say, provided by club (6)
I believe the answer is:
putter
'club' is the definition.
(a golf club)
'parking say provided by' is the wordplay.
'parking' becomes 'p' (abbreviation on road signs).
'say' becomes 'utter' (to utter something is to say or speak it).
'provided by' says to put letters next to each other.
'p'+'utter'='PUTTER'
(Other definitions for putter that I've seen before include "Golf club used on greens" , "Type of golf club" , "Club used on the green" , "Golf-club" , "Club to use on the green" .)