κάλαϊς
From LSJ
ὅταν δὲ τἄμ' ἀθυμήσαντ' ἴδῃς, σύ μου τὸ δεινὸν καὶ διαφθαρὲν φρενῶν ἴσχναινε παραμυθοῦ θ' → whenever you see me despondent over my situation, do what you can to lessen and relieve what is wild and senseless in my thinking | whenever you see me despondent, you must cure the grim derangement of my mind and encourage me
English (LSJ)
or (in Plin. l.c.) κάλλαϊς, ιδος, ἡ,
A precious stone of a greenish blue, turquoise, Plin.HN37.151. II cock, IG4.914.3 (Epid., v B. C.). III = ἱστίον, Hsch.
German (Pape)
[Seite 1306] ὁ, auch κάλλαϊς, ein blaugrünlicher oder meergrüner Edelstein, Plin. H. N. 37, 10, nach der vorigen Farbe benannt. – Nach Hesych. auch = ἱστίον.