Usage: 5 forms in 6 verses
Form Translated As     In Verse(s)
πτερωτόν feathered LXX.Gen.1.21
πτερωτού feathered LXX.Deut.4.17
πτερωτοίσ for feathered LXX.Prov.1.17
πτερωτοί feathered LXX.Ezek.1.7
πτερωτά feathered LXX.Ps.78.27LXX.Ps.148.10

Liddell-Scott-Jones

πτερωτός (pterōtos) feathered G:A

πτερωτός-ωτός, , όν,

also ός, όν [Refs 5th c.BC+]:— feathered, [Refs 5th c.BC+]; [ ψυχὴ] ἦν τὸ πάλαι π. [Refs 5th c.BC+]; προσκεφάλαια π. stuffed with feathers, [Refs 2nd c.AD+]

__II winged, ὄφιες [Refs 5th c.BC+]; ὄχος, ἅρματα, [Refs 5th c.BC+]
__II.2 π. φθόγγος a sound as of wings in the air, [Refs 5th c.BC+]
__II.3 π. χιτωνίσκοι tunics with flaps, [Refs 1st c.AD+]
__II.4 Astrology texts, epithet of certain signs, [Refs 2nd c.AD+]
__II.5 πτερωτόςωτοί (i.e. ὄρνιθες) winged creatures, birds, [πτερωτόςωτῶν 4th-5th c.BC: Aeschylus Tragicus “Supplices” 510, 5th c.BC: Euripides Tragicus “Helena” 747; π. γένος 4th c.BC: Aristoteles Philosophus “Historia Animalium” 490a12; τὰ π. τῶν ζῴων, οἷον τὰς ὄρνιθας [prev. work] 518b35; ἔντομα, καὶ ἄπτερωτόςα καὶ π. [prev. work] 523b18; sometimes of birds, as a sub-division of τὰ πτηνά, opposed to τὰ πτιλωτά, τὰ δερμόπτερωτόςα, [prev. work] 490a6. ">Refs 5th c.BC+]