κάμ
From LSJ
οὕτως εἴη ἡμίν ὁ Θεός βοηθός καὶ τὸ ἱερὸν Αὐτοῦ Εὐαγγέλιον ὧδε ἐμφανισθέντα-ὁρκισθέντα → so help us God and Ηis holy Gospel the things here declared and sworn
English (LSJ)
Ep. and Lyr. shortd. form for κατά before μ, Il.11.172, etc.
German (Pape)
[Seite 1315] = κατά, vor μ, z. B. κὰμ μέν Od. 20, 2; Hes. O. 441; κὰμ μέσον Il. 11, 172.