|secretary of state|
|1.||(in Britain) the head of any of several government departments|
|2.||(in the US) the head of the government department in charge of foreign affairs (State Department)|
|3.||(in certain US states) an official with various duties, such as keeping records|
The head of the United States Department of State and, as leading member of the cabinet, fourth in line of succession to the presidency. The secretary of state is charged with formulating American foreign policy and conducting relations with other nations.