Definition
A biretta is a square-shaped hat with three or four ridges or peaks on top, worn by clergy in the Catholic Church and some Anglican and Lutheran traditions. βͺοΈ It's often black, but other colors signify different ranks or roles. Think of it as a graduation cap, but for religious officials. It is a symbol of authority and learning. The three peaks are common, symbolizing the Trinity. It is a traditional head covering with historical significance.