Where does “Tartar” come from?

Tartar (Old French) comes from Medieval Latin tartarus, from Latin tartarus, from Ancient Greek Τάρταρος, from Ancient Greek Ταρτησσός, from Ancient Greek Ἡράκλειοι Στῆλαι.

Ancestry of “Tartar”, step by step

Step	Language	Word	Meaning
1	Medieval Latin	tartarus	Tatar
2	Latin	tartarus	A river of Venetia that used to flow into the Adriatic Sea, now called Tartaro
3	Ancient Greek	Τάρταρος	Tartarus
4	Ancient Greek	Ταρτησσός	Tartessus; Tartessos
5	Ancient Greek	Ἡράκλειοι Στῆλαι	—

Words derived from “Tartar”

Every word from Ancient Greek Ἡράκλειοι Στῆλαι →Every word from Ancient Greek Ταρτησσός →Every word from Ancient Greek Τάρταρος →