Dharma teacher (4)
I believe the answer is:
lama
'dharma teacher' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for lama that I've seen before include "Holy man in Tibet" , "A Buddist monk in Tibet" , "Tibetan spiritual leader" , "Dalai . . . ., chief priest and once ruler of Tibet" , "A Buddhist priest in Tibet (4)" .)