Tibetan ox (3)
I believe the answer is:
yak
'tibetan ox' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for yak that I've seen before include "Hairy Tibetan ox" , "A Tibetan long-haired ox" , "Himalayan ox" , "Himalayan bovine" , "Shaggy-haired ox" .)