(n.) An officer of state whose business is to superintend and manage the affairs of a particular department of government, and who is usually a member of the cabinet or advisory council of the chief executive; as, the secretary of state, who conducts the correspondence and attends to the relations of a government with foreign courts; the secretary of the treasury, who manages the department of finance; the secretary of war, etc.
Meaning of SECRETARY in English
Webster's English dictionary. Английский словарь Webster. 2012