1. A wild, shaggy-haired ox (Bos grunniens) of the mountains of central Asia.
2. A domesticated yak, used as a work animal or raised for meat and milk.

[Tibetan gyag.]

The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.