Noun
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.
Source: Webster's dictionaryDuring the arrest of the 29-year-old man, police allegedly seized a further three firearms – an MK5 rifle, a Berretta 9mm pistol, and a 9mm mini-Glock pistol. Source: Internet