Golf club without leader, say (5)
I believe the answer is:
utter
'say' is the definition.
(thesaurus)
'golf club without leader' is the wordplay.
'golf club' becomes 'putter' (I've seen this before).
'without leader' means to remove the first letter.
'putter' with its initial letter removed is 'UTTER'.
(Other definitions for utter that I've seen before include "Speak or say" , "Antique offer for sale" , "Make (a sound); complete" , "in toto" , "Prize" .)