Berretta
Berretta ({not transcribed}) , noun
[Italian, from Late Latin birrettum, berretum, a cap, dim. of Latin birrus, birrum, a cloak to keep off rain, compare Greek {not transcribed} tawny, red: compare Sp. birreta, Portuguese barrete, and English Barret.]
A square cap worn by ecclesiastics of the Roman Catholic Church. A cardinal's berretta is scarlet; that worn by other clerics is black, except that a bishop's is lined with green.