Where does “iris” come from?

Iris comes from Latin iris, from Ancient Greek ἶρις, from Proto-Indo-European wey-ro-, ultimately from Proto-Indo-European weh₁y-.

iris (English): A plant of the genus "Iris", common in the...

Definitions

Step	Language	Word	Meaning
1	Latin	iris	rainbow; Third-declension noun; dative/ablative...
2	Ancient Greek	ἶρις	rainbow; halo; various species of the genus...
3	Proto-Indo-European	wey-ro-	a twist, thread, cord, wire
4	Proto-Indo-European	weh₁y-	to twist, wind, weave, plait; to wrap, enclose,...