Perfect golf club short of parking (5)
I believe the answer is:
utter
'perfect' is the definition.
(synonyms)
'golf club short of parking' is the wordplay.
'golf club' becomes 'putter' (type of golf club).
'short of' is a deletion indicator.
'parking' becomes 'p' (abbreviation on road signs).
'putter' with 'p' removed is 'UTTER'.
(Other definitions for utter that I've seen before include "Complete; absolute" , "Complete madman" , "Give tongue to" , "Absolutely" , "Circulate" .)