Proper noun
Ashtadhyayi
A grammatical treatise codifying what came to be known as Sanskrit, one of the first works on descriptive linguistics, generative linguistics, or linguistics altogether.
These highlanders, designated as "parvatiya Ayudhajivinah" in Pāṇini's Astadhyayi, Ashtadhyayi 4.3.91; India as Known to Pāṇini, 1953, pp 424, 436–39, 455–457, Dr V. S. Aggarwala. Source: Internet