Where does “ευρωπαϊκός” come from?

ευρωπαϊκός (Greek) comes from Greek Ευρωπαίος, from Ancient Greek Εὐρωπαῖος, from Ancient Greek Εὐρώπη, from Ancient Greek ὤψ, from Proto-Hellenic ókʷs, from Proto-Indo-European h₃ókʷs, from Proto-Indo-European h₃ekʷ- — to see; eye.

ευρωπαϊκός (Greek): European pertaining to Europe, its people or the European Union