δέσκαλος
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)
ἡ, dub. sens., A ἀσπάζεται ἡμᾶς… Ἀθηναῒς ἡ δέσκαλος BGU 332.9 (ii/iii A. D.).
Spanish (DGE)
v. διδάσκαλος.