Where does “Siris” come from?

Siris (Latin) comes from Ancient Greek Σῖρις, from Proto-Indo-European seykʷ-, from Proto-Indo-European sey- — to be wet; dribble; run; to stretch one's arm;...

Siris (Latin): that flows into the Ionian Sea, now the river Sinni

Definitions

that flows into the Ionian Sea, now the river Sinni

Ancestry of “Siris”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	Σῖρις	Siris, a city of Magna Graecia
2	Proto-Indo-European	seykʷ-	to moisten; to filter
3	Proto-Indo-European	sey-	to be wet; dribble; run; to stretch one's arm;...

Every word from Proto-Indo-European sey- →Every word from Proto-Indo-European seykʷ- →Every word from Ancient Greek Σῖρις →