Σιδοῦς
From LSJ
εἰ ἀποκρυπτόντων τῶν Μήδων τὸν ἥλιον ὑπὸ σκιῇ ἔσοιτο πρὸς αὐτοὺς ἡ μάχη καὶ οὐκ ἐν ἡλίῳ → if the Medes hid the sun, the battle would be to them in the shade and not in the sun
English (LSJ)
οῦντος, ὁ, Sidus, a place near Corinth, where pomegranates grew, X.HG4.4.13, Rhian.2; also Σιδόεις, Euph.11, Nic.Fr.50: Adj. Σῐδούντιος, α, ον, St.Byz.; fem. σῐδηρ-τιάς, άδος, Hsch.