Presumably fromHebrewעכו״ם (an acronym for the phrase עובד כוכבים ומזלות "worshiper of stars and constellations"), pronounced as a word.

akum (pluralakumsorakum)

1. Anidolater.
2. A non-Jew (used to avoidcensorship in Jewish texts).

• Mauk,muka

akum

1. water

• Čestmír Loukotka, ‎Johannes Wilbert (editor),Classification of South American Indian Languages (1968, Los Angeles: Latin American Studies Center, University of California), page(s) 162

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