biretta
bi.ret.ta \b*-'ret-*\ n [It berretta, fr. OProv berret cap, irreg. fr. LL birrus cloa]k with a hood, of Celt origin; akin to MIr berr short : a square cap with three ridges on top worn by clergymen esp. of the Roma n Catholic Church
Webster's English Dictionarybi.ret.ta \b*-'ret-*\ n [It berretta, fr. OProv berret cap, irreg. fr. LL birrus cloa]k with a hood, of Celt origin; akin to MIr berr short : a square cap with three ridges on top worn by clergymen esp. of the Roma n Catholic Church