καστανεών
From LSJ
μοῦνοι Ἑλλήνων δὴ μουνομαχήσαντες τῷ Πέρσῃ → alone of all Greeks we met the Persian singlehandedly, alone of all Greeks having fought singlehanded with the Persians
German (Pape)
[Seite 1333] ῶνος, ὁ, Kastanienwald, Geopon.
Greek (Liddell-Scott)
καστᾰνεών: -ῶνος, ὁ, δάσος ἐκ καστανεῶν, Γεωπ. 3. 15, 7.