Определение biretta в Английский Язык Английский Язык словарь
A square cap, originally with four ridges across the top, surmounted by a tuft, worn by Roman Catholic clergy (and by some in the Anglican Church). A three-sided biretta is worn by Roman Catholic clergy for liturgical celebrations
A square cap, originally with four ridges across the top, (or three,) surmounted by a tuft, worn by Roman Catholic clergy (and by some in the Anglican Church.)