derdeba noun1 •A complex liturgy of the Gnawas, recreating the first sacrifice and the genesis of the universe by the evocation of the seven main manifestations of the divine demiurgic activity.In derdeba ceremonies, gnawa music and dancing are often used to drive out evil spirits (when someone is sick or troubled) or to honor beneficial spirits (when someone is exceptionally well). — 2007 formsderdebas
