CAPPUCCIO. - It is the upper part of the garment with which the ancients covered their heads and which was called cucullus.
It is used by monks, religious, and members of various associations or confraternities, and in certain Congregations of monks it is worn in choir instead of the biretta. Its form varies according to the different religious Orders; in some it is simply a head covering, while in others it is a sort of mantlelet or mozzetta covering the head or shoulders, as among the Minori, or of an elongated shape, as among the Cappuccini, whence their name. In ancient times canons and prelates also covered their heads with it, and a reminder of it remains in the small c. found in the mozzetta. The c. derives its origin chiefly from practical necessity: it served to cover the head in cold and rainy weather.
The cappa magna or solemn mantle of prelates is also provided with a large c., fastened at the back, which is used only on wholly extraordinary occasions.
Anselmo Tappi Cesarini