Chilean mountain range (5)
I believe the answer is:
andes
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">chilean mountain range</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 andes that I've seen before include "Mountain range in South America" , "South American mountains" , "Great S American mountains" , "World's longest mountain range" , "Danes in S American mountains" .)