ægagrus

from The Century Dictionary.

• noun A wild goat, supposed to be the species now known to inhabit the mountains of the Caucasus, Persia, etc., the paseng or pasing of the Persians, and the wild stock of most if not all of the breeds of the domestic goat.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun Alternative form of aegagrus.