Meaning

noun wading birds of warm regions having long slender down-curved bills

originMentioned in the Wycliffe Bible as ybyn or ibin, as ibys from 16th century and ibis shortly after. From Latin ībis, from Ancient Greek ἶβις (îbis), from Egyptian h-b-G26 (hbj) (compare Coptic ϩⲓⲃⲱⲓ (hibōi) or ϩⲓⲡ (hip)).

Etymology from Wiktionary, CC BY-SA 3.0