The bishop's hat is a piece of headgear that is worn by clergymen of the Catholic Church. This hat is also known as a miter, and it is a symbol of spiritual authority and leadership. There are several synonyms for the bishop's hat, including the episcopal hat, the pontifical hat, and the mitre. In some cultures, this hat is also known as the tiara, which is derived from the Greek word "tirae" meaning "crown." In addition to its religious significance, the bishop's hat has also become a popular fashion accessory, with many designers incorporating its distinctive shape and style into their designs.