πυριφλεγέθων
From LSJ
ἀπὸ τῶν καρπῶν αὐτῶν ἐπιγνώσεσθε αὐτούς → ye shall know them by their fruits, by their fruits ye shall know them, by their fruits you shall know them, you will know them by their fruit
English (LSJ)
ουσα, ον,
A blazing like fire, ἔσοπτρον Agesianax ap.Plu.2.921b. II pr. n. Pyriphlegethon, one of the rivers of hell, Od.10.513, Pl.Phd. 114a.
Greek (Liddell-Scott)
πῠρῐφλεγέθων: -ουσα, -ον, λάμπων ὡς φλὸξ πυρός, ἔσοπτρον Ἀγησιάναξ παρὰ Πλουτ. 2. 921Β. ΙΙ. ὡς οὐσιαστ., ὁ Πυριφλεγέθων, εἷς τῶν ποταμῶν τοῦ Ἅιδου, οὗ τὰ ῥεῖθρα ἦσαν πυριφλεγῆ κατὰ τὰ μυθολογούμενα, Ὀδ. Κ. 513, πρβλ. Πλάτ. Φαίδωνα 114Α.