English▸ noun
(plural yak1 or plural yaks)
a large domesticated wild ox with shaggy hair, humped shoulders, and large horns, used in Tibet as a pack animal and for its milk, meat, and hide. Genus Bos, family Bovidae; the domesticated B. grunniens, descended from the wild B. mutus, which is still found on rare occasions at high altitude.
– ORIGIN late 18th century: from Tibetan gyag.