Baretti: A dictionary of the English and Italian languages
Larg-hézza, Larg-hità, s. f. (obs.)
1. breadth, width, wideness, largeness; 2. liberality, generosity.Far larghezze, to be liberal; 3. plenty, store, abundance, great quantity; 4. permission, leave, liberty. — d'una nave, the breadth of a ship.
Florio: a worlde of wordes, or most copious, dictionarie in Italian and English
larghezza: largenesse, widenesse, breadth. Also largesse, bountie or liberalitie.