Peruvian mountain range (5)
I believe the answer is:
andes
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">peruvian mountain range</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for andes that I've seen before include "Mountain range in South America" , "Great mountains of western S America" , "Mounts" , "South American mountain system" , "A geographical feature" .)