The term 'BIZ BOSS' is a colloquial way of referring to a business executive. The two crossword solutions for this term are EXEC (4 letters) and CEO (3 letters). An EXEC is an abbreviation for Executive, which is a high-level manager in a company who is responsible for making important decisions and overseeing the operations of the business. A CEO, or Chief Executive Officer, is the highest-ranking executive in a company and is responsible for setting the overall direction of the organization.