Ski slope (5)

I believe the answer is:
piste
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">ski slope</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 piste that I've seen before include "Ski trail" , "Skiing trail" , "Skiing course" , "slippery slope" , "strip of fencing" .)