Lexical Definition

‎πτηνόν‎ ptēnón (ptay-non') bird ^G:A
contraction for ‎πετεινόν‎

bird.

• a bird

Abbott-Smith

** πτηνός, -ή, -όν (< πέτομαι), [in Aq.: Jb 5:7*;]
winged; as subst., τὰ π., birds: I Co 15:39.†

Abbott-Smith References

Liddell-Scott-Jones

πτηνός, ή, όν,

Doric dialect πτανός, ά, όν; also ός, όν [Refs 5th c.BC+]: (πτῆναι, πέτομαι):— flying, winged, Διὸς π. κύων, i.e. eagle, [Refs 4th c.BC+]; ὄρνις, οἰωνός, [Refs 5th c.BC+]; Ἔρως, ἵπποι, [Refs 5th c.BC+]; also of arrows, π. ἰοί [Refs 5th c.BC+]; π. φυγή, of birds, [Refs 5th c.BC+]

__2 τὰ π. winged creatures, birds, [Refs 5th c.BC+]; opposed to τὰ πεζά, [Refs 5th c.BC+]; opposed to τὰ πεζά and τὰ πλωτά, [Refs 4th c.BC+] the pursuit of winged game, [Refs 5th c.BC+]; ἡ [θήρα] τῶν π. [Refs 5th c.BC+]: of young birds, fledged, [Refs 5th c.BC+]
__3 swift-footed, παρδάλεις, κάμηλοι, [Refs 4th c.AD+]
__II metaphorically, πτηνοὶ μῦθοι, Homer's ἔπεα πτερόεντα, [Refs 5th c.BC+] fleeting, idle words, [Refs 5th c.BC+]; πτηνὰς διώκεις ἐλπίδας fleeting hopes, [Refs]
__II.2 πτανὰ ἰσχύς soaring, aspiring strength, [Refs 5th c.BC+]