Liddell-Scott-Jones

οἰωνός (oiōnos) an omen ^G:N-M

οἰωνός, ὁ,

a large bird, bird of prey, οἰωνοί, φῆναι ἢ αἰγυπιοὶ γαμψώνυχες [Refs 8th c.BC+]; of the eagle, Κρονίωνι.. φίλτατος οἰωνῶν [Refs 8th c.BC+]; called οἰωνῶν βασιλεύς by [Refs 5th c.BC+]; mentioned as devouring carcasses, [Refs 8th c.BC+]; ὑπ᾽ οἰωνῶν ταφέντα, of corpses devoured by carrion birds, [Refs 5th c.BC+]; as an image of swiftness, οἰωνοῖς ἅμ᾽ ἕπονται [Refs 8th c.BC+]

__2 generally, birds, opposed to beasts, [Refs 5th c.BC+]; so in οἰωνοκτόνος.
__II a bird of omen or augury, [Refs 8th c.BC+]; of augurs, καθέζεσθαι ἐπ᾽ οἰωνῶν, ἐπ᾽ οἰωνοῖς καθῆσθαι, [Refs]; οἱ ἐπ᾽ οἰωνοῖς ἱερεῖς the augurs, [Refs]
__III omen, token, presage, drawn from these birds, [Refs 8th c.BC+]; εἷς οἰ. ἄριστος ἀμύνεσθαι περὶ πάτρης the one best omen is to fight for fatherland, [Refs 8th c.BC+]; οἰ. ἀγαθοί good omens, [Refs 8th c.BC+]; δέκομαι τὸν οἰ. I accept the omen, hail it as auspicious, [Refs 5th c.BC+]; οἰωνὸν θέσθαι or τίθεσθαι take as an omen, [Refs 5th c.BC+]; δι᾽ οἰωνοῦ λαμβάνειν, πρὸς οἰωνοῦ λαβεῖν, [Refs 5th c.BC+]
__IV as adjective, or in apposition, οἰωνὸς θεά the bird goddess, [Refs 5th c.BC+]