Yantrakiraṇāvalī (1423) · 1423 CE
Ohashi's edition is an image scan; pending OCR proofread.
Toraṇa, the arched gateway, among the stars of the astrolabe table. — Literal rendering by the compiler
First attestation, a Sanskrit formation (Pai & Shylaja 2020): the Serpent's neck star as a toraṇa, the festal arch. The Sarvasiddhāntarāja later carries the region as Sarpaśīrṣa.
Yantrakiraṇāvalī, Yantrarājādhikāra star table (ed. Ohashi 1997; identified in Pai & Shylaja 2020) · text · translation