Toff beat old club on the golf course (7)
I believe the answer is:
niblick
'club on the golf course' is the definition.
'niblick' can be an answer for 'club' (historical type of golf club). I am not certain of the 'on the golf course' bit.
'toff beat old' is the wordplay.
I cannot quite see how this works, but
'beat' could be 'lick' (synonyms) and 'lick' is present in the answer.
The remaining letters 'nib' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for niblick that I've seen before include "Golf iron" , "Old golf club" , "number eight say" , "old-fashioned club" , "No 9 iron" .)