The silnyen (Tibetan : སིལ་སྙན།, Wylie : sil snyen), or flat bell, is a Tibetan percussion instrument in the form of a cymbal with a small or no central boss, played by striking by horizontal movement. [1] The silnyen is unique to the Bön religion and is primarily used for the tantric meditative practice of Chöd, representing the feminine aspect when used alongside the Chöda. [2]