Shot that takes golfer hours (5)
I believe the answer is:
round
'shot' is the definition.
(thesaurus)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for round that I've seen before include "Like ball < in rough" , "Item of music - single item of ammunition" , "Ignore fractions" , "Circular - stage" , "Having a circular shape" .)