Incision a golfer may do well to make (3)
I believe the answer is:
cut
I believe this is a double definition.
'incision' is the first definition.
(I've seen this before)
'a golfer may do well to make' is the second definition.
(as in 'making the cut' in a golf tournament)
(Other definitions for cut that I've seen before include "Cross" , "Slash" , "Intersect; reduce" , "reduced" , "Incision; reduce" .)