Zucchetto
The zucchetto (, also UK: , US: , Italian: [dzukˈketto]; meaning 'small gourd', from zucca 'pumpkin' or more generally 'gourd'; plural in English: zucchettos) or solideo, officially a pileolus, is a small, hemispherical, form-fitting ecclesiastical skullcap worn by clerics of the Catholic Church, the Syriac Orthodox Church, and by senior clergy in certain denominations of Lutheranism, Anglicanism, and Methodism. It is also called a pilus, pilos, pileus, pileolo, subbiretum, submitrale, soli deo, berrettino, calotte or calotta.