Baretti: A dictionary of the English and Italian languages
Guárdi-a, s. f. dim. Guárdi-ólo, Guárdi-uólo,
1. custody, keeping under restraint; 2. defence, protection, bulwark; 3. vigilance, watchfulness, wariness, circumspection; 4. guard, sentinel. Esser di —, to be upon guard. Corpo di —, corps de guard or guard-house; 5. guard, number of soldiers upon guard. La —, the night-watch. — del fuoco, firemen. Terra or luogo di —, a fortified town or place. Mettersi in —, to put one's self on one's guard. Torre di —, a watchtower. — di spada, the hilt of a sword; 6. a nurse at an hospital. — morta, a scare-crow. Aver —, to be careful, attentive. Avere a —,to guard, have in custody. Dare in —, to give into custody. Tener —, to put one's self in guard (in fencing). — d'una briglia, the branches of a bridle. — di spada, the hilt of a sword; pl. the fang-teeth of a dog.
Florio: a worlde of wordes, or most copious, dictionarie in Italian and English
guardia: a gard, a watch, a keeping, a looking vnto, an ouersight, a heed. Also a tuition, an ouerseeing, a custodie. Also a protection or a defence, a ward. Also the ward of a locke or of a key. Also the hilt of a sword. Also some part of the bit of a horse. Also a Lardery or a Store-house. Also a Ward-robe. Also the gard that infoulds a child in the mothers wombe. Looke La guárdia.