τέθηλα
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
German (Pape)
[Seite 1079] perf. von θάλλω.
French (Bailly abrégé)
pf. de θάλλω.
English (Autenrieth)
see θάλλω.
Russian (Dvoretsky)
τέθηλα: pf. к θάλλω.