Understanding of golf pars when going round (5)
I believe the answer is:
grasp
'understanding of' is the definition.
(I've seen this in another clue)
'golf pars when going round' is the wordplay.
'golf' becomes 'g' (phonetic alphabet: alpha, bravo, charlie etc.).
'when going round' indicates an anagram.
'pars' with letters rearranged gives 'rasp'.
'g'+'rasp'='GRASP'
(Other definitions for grasp that I've seen before include "Take firm hold" , "Seize, hold firmly" , "Hold - understanding" , "Clutch" , "Understand; hold tight" .)