A staff surmounted by a crook or cross carried by bishops as a symbol of pastoral office WordNet 3.0 & Open English WordNet

A crosier or crozier 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. Wikipedia

A staff resembling a shepherd's crook carried by bishops and abbots as a symbol of office ceremonial staff in Christianity Wikidata

A staff with a hooked end similar to a shepherd's crook, or with a cross at the end, carried by an abbot, bishop, or archbishop as a symbol of office. Wiktionary

Staff of a bishop or abbot. Wiktionary (translation)