Extraordinary alpine language (6)
I believe the answer is:
nepali
'language' is the definition.
(Nepali is an example)
'extraordinary alpine' is the wordplay.
'extraordinary' is an anagram indicator.
'alpine' is an anagram of 'NEPALI'.
(Other definitions for nepali that I've seen before include "Native of one Himalayan state" , "one found in mountainous region" , "Language of Kathmandu" , "Mountain-dweller" , "Asian national" .)