Where does “ειλεός” come from?

ειλεός (Greek) comes from Ancient Greek εἰλεός, from Ancient Greek εἰλέω, from Proto-Indo-European wēlH-, from Proto-Indo-European welH- — to turn, to wind.

ειλεός (Greek): ileum

Definitions

ileum

Ancestry of “ειλεός”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	εἰλεός	intestinal obstruction, ileus; den, hole;...
2	Ancient Greek	εἰλέω	to assemble; to turn, wind; to press together
3	Proto-Indo-European	wēlH-	to roll, to undulate
4	Proto-Indo-European	welH-	to turn, to wind

Every word from Proto-Indo-European welH- →Every word from Proto-Indo-European wēlH- →Every word from Ancient Greek εἰλέω →