A crosier or crozier (also known as a paterissa, pastoral staff, or bishop's staff) is a stylized staff that is a symbol of the governing office of a bishop or abbot and is carried by high-ranking prelates of Roman Catholic, Eastern Catholic, Eastern Orthodox, Oriental Orthodox, and some Anglican, Lutheran, United Methodist and Pentecostal churches.
In Western Christianity the usual form has been a shepherd's crook, curved at the top to enable animals to be hooked. In Eastern Christianity, it is found in two common forms: tau-shaped, with curved arms, surmounted by a small cross; or a pair of sculptured serpents or dragons curled back to face each other, with a small cross between them.
Other typical insignia of prelates are the mitre, the pectoral cross, and the episcopal ring.
The origin of the crozier as a staff of authority is uncertain, but there were many secular and religious precedents in the ancient world. One example is the lituus, the traditional sta