Liddell-Scott-Jones

φαιός (phaios) gray ^G:A

φαιός, ά, όν,

grey, of any colour mixed of black and white, [Refs 5th c.BC+] in a negative sense, [Refs 5th c.BC+]; φ. ἄρτοι, opposed to to λευκοί, [Refs 2nd c.AD+]; of mourning, φ. ἱμάτια [Refs 3rd c.BC+]; ἰώδης καὶ φ. χολή (καλοῦσι δ᾽ αὐτὴν ἰσατώδη) [Refs 2nd c.AD+]; dark-complexioned, P.Strassb.79.2 [Refs 1st c.BC+]

__2 of sound, harsh, [Refs 4th c.BC+]
__II φαιά, ἡ, name of a plaster, [Refs 1st c.AD+] (Cf. Lithuanian gaĩsas 'reflected light of a blazing fire'.)