(Pers.) sacred cord worn around the waist by Zoroastrians; the short ritual of untying and retying the kusti.
Found on
http://www.avesta.org/zglos.html

(from the article `ceremonial object`) ...the Zulus and other African tribes, bull-roarers were launched on such an occasion of initiation. In the Brahmanism, Zoroastrianism, and Parsiism ...
Found on
http://www.britannica.com/eb/a-z/k/59
No exact match found.