Swiss peak (3)
I believe the answer is:
alp
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">swiss peak</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for alp that I've seen before include "Swiss mountain" , "high point" , "Mountain pasture" , "High mountain" , "One of a European mountain range" .)