Golfing peg (3)
I believe the answer is:
tee
'golfing peg' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for tee that I've seen before include "Where a hole starts" , "Start of a hole in golf" , "Golf peg" , "Peg for golfer" , "Golfing support" .)