Mont Blanc or Matterhorn (3)
I believe the answer is:
alp
I believe this is a double definition.
'mont blanc' is the first definition.
(I've seen this in another clue)
'matterhorn' is the second definition.
(I've seen this in another clue)
(Other definitions for alp that I've seen before include "One of a European mountain range" , "Mont Blanc, for example" , "High mountain" , "Mountain pasture" , "Swiss mountain" .)