The Collaborative International Dictionary of English v.0.48:

Hoodoo \Hoo"doo\, v. t.
   To be a hoodoo to; to bring bad luck to by occult influence;
   to bewitch. [Colloq., U. S.]
   [Webster 1913 Suppl.]

The Collaborative International Dictionary of English v.0.48:

Hoodoo \Hoo"doo\ (h[=oo]"d[=oo]), n. [Perh. a var. of voodoo.]
   1. One who causes bad luck. [Colloq.]
      [1913 Webster]

   2. Same as voodoo.
      [PJC]

   3. Bad luck.
      [PJC]

The Collaborative International Dictionary of English v.0.48:

Hoodoo \Hoo"doo\, n.
   A natural rock pile or pinnacle of fantastic shape. [Western
   U. S.] "I watched for hours as the shadows moved through the
   hoodoos in Bryce Canyon park."
   [Webster 1913 Suppl. +PJC]

WordNet (r) 3.0 (2006):

hoodoo
    n 1: (geology) a column of weathered and unusually shaped rock;
         "a tall sandstone hoodoo"
    2: a practitioner of voodoo
    3: a charm superstitiously believed to embody magical powers
       [syn: juju, voodoo, hoodoo, fetish, fetich]
    4: something believed to bring bad luck
    v 1: bring bad luck; be a source of misfortune

Moby Thesaurus II by Grady Ward, 1.0:

78 Moby Thesaurus words for "hoodoo":
   Jonah, alchemy, amulet, bad influence, bedevil, bewitch,
   bewitchery, bring bad luck, charm, curse, demonize, diabolize,
   divination, enchantment, evil eye, evil genius, evil star, fetish,
   fetishism, fylfot, gammadion, glamour, good-luck charm, gramarye,
   hex, ill wind, jinx, juju, jujuism, love charm, lucky bean,
   lucky piece, madstone, magic, malevolent influence, malocchio,
   mascot, mumbo jumbo, natural magic, necromancy, obeah, obsess,
   overlook, periapt, philter, phylactery, possess, rune, scarab,
   scarabaeus, scarabee, shamanism, sorcery, sortilege, spell,
   spellbinding, spellcasting, sudarium, swastika, sympathetic magic,
   talisman, thaumaturgia, thaumaturgics, thaumaturgism, thaumaturgy,
   theurgy, vampirism, veronica, voodoo, voodooism, wanga, whammy,
   white magic, witch, witchcraft, witchery, witchwork, wizardry