Buddhist master (4)
I believe the answer is:
lama
'buddhist master' 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 "A Tibetan Buddhist priest or monk" , "Dalai . . . ., chief priest and once ruler of Tibet" , "A Buddhist priest in Tibet (4)" , "Religious leader" , "A Buddist monk in Tibet" .)