A charm like that of the “evil eye.” The word is probably a corruption of Voodoo. Hence to HOODOO, to place under a charm.

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1889.  The prospect of pleasing his party, and at the same time escaping a hoodoo, must be irresistibly attractive.—N.Y. Sun, March 20. (Century Dict.)

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1895.  Like the Mississippi, [the St. Lawrence] hoodoos whoever once touches it.—Chicago Advance, July 25. (N.E.D.)

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1902.  Bartell’s got the whole gang hoodooed—the blasted blockhead!—W. N. Harben, ‘Abner Daniel,’ p. 300.

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1909.  It was the hope of political reward that first drew a following to Hearst; and it was the final conviction, that a fatal “hoodoo” rested upon him, so that he could never fill the offices with his friends and employees, which left him so … ridiculous a figure in the last campaign.—N.Y. Evening Post, April 19.

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