Himalayan mountaineer (6)
I believe the answer is:
sherpa
'himalayan mountaineer' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for sherpa that I've seen before include "one to climb mountains maybe" , "Experienced climber" , "Mountain dweller" , "Skilled mountaineer of the Himalayas" , "Highly competent guide" .)