Bovine chatter (3)
I believe the answer is:
yak
I believe this is a double definition.
'bovine' is the first definition.
(yak is a kind of bovine)
'chatter' is the second definition.
('yak' can be a synonym of 'chatter')
(Other definitions for yak that I've seen before include "Gossip; ox" , "Gossip (sl)" , "Wild ox" , "Talk incessantly" , "Long-haired ox of Tibet" .)