Source : Webster's Revised Unabridged Dictionary (1913)

Golf \Golf\, v. i. [imp. & p. p. {Golfed}; p. pr. & vb. n.
   {Golfing}.]
   To play at golf.

         Last mystery of all, he learned to golf. --Kipling.

Source : WordNet®

golfing
     n : playing golf; "he goes south every winter for the golfing"