The outer garment, made of linen, worn over the cassock by the officiating minister during the Church service. It is a loose flowing vestment, generally reaching to the knees, having broad, full, open sleeves. It is not specially a Priestly garment, as it is worn by Deacons and also by Lay-Readers, and in a modified form by choristers. The word is derived from the Latin, superpelliceum, meaning an over-garment. (See VESTMENTS.)