Golfer's peg (3)
I believe the answer is:
tee
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">golfer's peg</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for tee that I've seen before include "Golf-peg" , "'Drive off it, half-laughing (3)'" , "supporter on course" , "support of leisure activity" , "Golfing support" .)