θρηνητικόν

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

Source

Russian (Dvoretsky)

θρηνητικόν: τό печальное настроение, скорбь (τὸ γοερὸν καὶ θ. Plut.).