1. A person or group having administrative or managerial authority in an organization. 2. The chief officer of a government, state, or political division. 3. The branch of government charged with putting into effect a country's laws and the administering of its functions. 4. A set of coded instructions designed to process and control other coded instructions. 5. an advisory body lacking executive powers. 6. the executive director of a drama troupe; executive experience and skills. 7. Of or relating to the branch of government charged with the execution and administration of the nation's laws.