πυρορραγής
From LSJ
αὐτὸν κέκρουκας τὸν βατῆρα τοῦ λόγου → you have struck the very threshold of the argument, you have struck the most important and chiefmost point
English (LSJ)
ές, (ῥήγνυμι)
A bursting in the fire, Cratin.253. II of sound, ψοφεῖ λάλον τι καὶ π. cracked, Ar.Ach.933 (lyr.).
Greek (Liddell-Scott)
πῠρορρᾰγής: -ές, (ῥήγνυμι) ὁ ἐν τῷ πυρὶ ῥηγνυόμενος, περὶ κεραμίων ὅσα ἐν τῷ πυρὶ ῥήγνυνται ἐν τῷ ὀπτᾶσθαι, ἴσως πυρροραγὲς κακῶς ὠπτημένον Κρατῖνος ἐν «Ὥραις» 10· ὡς ἐπίρρ. πυρροραγές, ψοφεῖ λάλον τι καὶ πυρορραγὲς Ἀριστοφάν. Ἀχ. 933.