Baretti: A dictionary of the English and Italian languages
Traboccáre, v. a.
1. to hurl, dart, throw. — una città, un castello, to attack a town, fortress, &c. with missiles; 2. to precipitate, throw down; 3. to overfill; v. n. 1. to fall precipitately; 2. (fig.) to exceed; 3. to lose the equilibrium; 4. to overflow.
Florio: a worlde of wordes, or most copious, dictionarie in Italian and English
traboccare: to fall downe ouer and ouer, or groueling on the ground, or headlong. Also to reele, tostagger, or stumble. Also to powne soorth with furie.