The Collaborative International Dictionary
Zuchetto
Zuchetto \Zu*chet"to\, n. [It. zucchetto.] (R. C. Ch.) A skullcap covering the tonsure, worn under the berretta. The pope's is white; a cardinal's red; a bishop's purple; a priest's black.
Wiktionary
zuchetto
n. (alternative form of zucchetto English)