Braso can be an inflection of brazing, which means placing in the heat of the fire or ember. In Colombia there is Brasso, which is a brand of a product that is used to shine oi polish metals (shine).
Inflection of an old verb 'brasar' ('to burn').
BRASO error by Brasso, liquid for cleaning tableware and other metal items, such as chrome, steel, copper or Latin. For silver another lumpiametals is used, such as silvo.