Where does “καστανομάτης” come from?

καστανομάτης (Greek) comes from Greek μάτι, from Byzantine Greek μάτιν, from Ancient Greek ὀμμάτιον, from Ancient Greek -ῐον, from Proto-Indo-European -yós — Creates adjectives from noun or verb stems.

καστανομάτης (Greek): browneyed brown eyed

Definitions

browneyed brown eyed

Ancestry of “καστανομάτης”, step by step

καστανομάτης traces back through two separate lines of ancestry.

via Greek μάτι

Step	Language	Word	Meaning
1	Greek	μάτι	eye; burner
2	Byzantine Greek	μάτιν	—
3	Ancient Greek	ὀμμάτιον	—
4	Ancient Greek	-ῐον	diminutive suffix; "suffix forming...
5	Proto-Indo-European	-yós	Creates adjectives from noun or verb stems

via Greek κάστανο

Step	Language	Word	Meaning
1	Greek	κάστανο	chestnut
2	Ancient Greek	κάστανον	Rare singular form of κᾰ́στᾰνᾰ

Every word from Proto-Indo-European -yós →Every word from Ancient Greek -ῐον →Every word from Ancient Greek ὀμμάτιον →