Where does “गवामयन” come from?

गवामयन (Sanskrit) comes from Sanskrit अयन, from Sanskrit इ, from Proto-Indo-European h₁éy- — he, this.

Ancestry of “गवामयन”, step by step

Step	Language	Word	Meaning
1	Sanskrit	अयन	path, road, way; course, circulation; precession
2	Sanskrit	इ	to go
3	Proto-Indo-European	h₁éy-	he, this

गवामयन — Etymology, Origin & Word History | Etymology Explorer