Where does “Ἑλίκη” come from?

Ἑλίκη (Ancient Greek) comes from Ancient Greek ἕλῐξ.

Ancestry of “Ἑλίκη”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	ἕλῐξ	—

Ἑλίκη — Etymology, Origin & Word History | Etymology Explorer