The term CORP. BIG SHOT refers to a high-ranking EXECUTIVE in a large corporation. The two crossword solutions for this term are EXEC (4 letters) and CEO (3 letters). An EXEC is a shortened form of the word 'EXECUTIVE, ' which is a person who is responsible for managing a business or organization. A CEO, or Chief EXECUTIVE Officer, is the highest-ranking EXECUTIVE in a company and is responsible for making major decisions and setting the overall direction of the organization.