Voodoo \Voo"doo\, n.1. See Voodooism.
2. One who practices voodooism; a negro sorcerer.
Source: Webster's Revised Unabridged Dictionary (1913)
Voodoo \Voo"doo\, a. Of or pertaining to voodooism, or a voodoo; as, voodoo incantations.