Priest of the East (4)
I believe the answer is:
lama
'priest of the east' 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 "Dalai . . . ., chief priest and once ruler of Tibet" , "A Tibetan Buddhist priest or monk" , "devout Buddhist" , "Tibetan spiritual leader" , "A Buddhist priest in Tibet (4)" .)