ταυτὶ γὰρ συκοφαντεῖσθαι τὸν Ἕκτορα ὑπὸ τοῦ Ὁμήρου → that is a false charge brought against Hector by Homer
prisma: ătis, n., = πρίσμα>,I a geometrical figure, the prism, Mart. Cap. 6, § 722.