kurdaitcha

from The Century Dictionary.

• noun Among the tribes of central Australia, a man chosen to avenge the death of one who has died, every death being supposed to be due to the magic influence of some enemy.
• noun A kind of shoe, made of emu-feathers matted together with human blood, worn by the kurdaitcha when on his errand. See def. 1.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun Australia An aboriginal evil spirit; a sorcerer.
• noun Australia An expedition taken to heal or avenge someone afflicted by evil sorcery.
• noun Australia A man chosen to go on such an expedition.
• noun Australia The boots worn by someone on such a mission, typically made from emu feathers.