Skilled Himalayan mountaineer (6)
I believe the answer is:
sherpa
'skilled himalayan mountaineer' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for sherpa that I've seen before include "guide to range" , "Skilled Himalayan mountaineer" , "mountaineer, maybe" , "- - Tensing" , "Highly competent guide" .)