Dictionary entry

ὄνος

G. Abbott-Smith's A Manual Greek Lexicon of the New Testament

ὄνος, -ου, ὁ, ἡ,

[in LXX chiefly for חֲמוֹר, also for אָתוֹן, etc.;]

an ass: Mt 21:2, 5^(LXX), Lk 14:5, Jo 12:15^(LXX); ὁ, Lk 13:15; ἡ, Mt 21:7.†