Winter sportsperson (5)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">winter sportsperson</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 skier that I've seen before include "Winter sports person" , "needs catching on way down" , "Winter sports athlete" , "He glides over snow, perhaps in sport" , "Slider on snow" .)
(Another definition for snowboarder that I've seen is " One sliding downhill".)