Bursa

Webster's Dictionary

(n.) Any sac or saclike cavity; especially, one of the synovial sacs, or small spaces, often lined with synovial membrane, interposed between tendons and bony prominences.

Cyclopedia of Biblical, Theological and Ecclesiastical Literature

in Kalmuck mythology, is a deity said to possess the virtue of preserving beauty, and also of healing diseases. Usually its image is made of stone, and enclosed in a small case, which is hung about the neck. When a Kalmuck contracts a disease, he rubs some of this stone off, and mixes the dust with his food, which he then eats. The Lamas have sole right to sell these idols. They affirm that the stone came from the mountain on which Dalai Lama lives.