σχολαρίκιον
From LSJ
οἱ τοῖς πέλας ἐπιβουλεύοντες, λανθάνουσι πολλὰκις ὑφ' ἑτέρων τοῦτ' αὐτὸ πάσχοντες → when people plot against their neighbours, they fall victim to the same sort of plot themselves
Greek (Liddell-Scott)
σχολαρίκιον: τό, ὡς καὶ νῦν, «σκουλαρίκι», ἐνώτιον, Κ. Πορφυρογ. Πρὸς τὸν υἱὸν Ρωμανὸν 232, 19, κλπ.