“Great one,” or “master of a great secret.” a title assumed by Cain, then later by his descendant, Lamech and others. While the origins of this term are unknown, the Hebrew word “maha” translates into “destroyer.” By adding an “n,” the term takes the form of a noun.
See 1 Moses 7:31-32, 8:16-17; 5 Moses 9:27; JST Genesis 5:16, 35 (Moses 5:30-31, 49).