Baretti: A dictionary of the English and Italian languages
Sboccáre, v. n.
1. to disembogue, discharge, or empty itself into the sea or into a river; 2. to overflow with impetuosity; 3. to talk obscenely;4. to rush out, fall out; v. a. 1. to throw a little of the liquor out of a vessel which is too full; 2. to break the gullet or neck of vessels.
Florio: a worlde of wordes, or most copious, dictionarie in Italian and English
sboccare: to disbogue, to mouth or fall into the sea as a Riuer doeth.