Golfer's warning shout (4)
I believe the answer is:
fore
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">golfer's warning shout</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for fore that I've seen before include "At the bow" , "Not aft" , "Golfer's warning shout" , "The front part of a ship" , "Golfer's shouted warning" .)