Baretti: A dictionary of the English and Italian languages
Brígli-a, s. f. dim. Brígli-étta, aug. Brígli-óne, Brígli-ózzo,
1. bridle; 2. rein, restraint. Correre a tutta —,to run at full speed. Lasciar la — in sul collo ad uno, to leave one to take his own course. Tener la —, to keep in, restrain. Dar la — al cavallo, to give the horse the reins.
Florio: a worlde of wordes, or most copious, dictionarie in Italian and English
briglia: a bridle, a snaffle, looke Béuere la bríglia.