Where does “Eltanin” come from?

Eltanin (English) comes from Arabic رَأْس اَلتِّنِّين, from Arabic رَأْس — head.

Ancestry of “Eltanin”, step by step

Step	Language	Word	Meaning
1	Arabic	رَأْس اَلتِّنِّين	the dragon’s head
2	Arabic	رَأْس	head

Eltanin — Etymology, Origin & Word History | Etymology Explorer