In·te·ri·or, n.
 1. That which is within; the internal or inner part of a thing; the inside.
 2. The inland part of a country, state, or kingdom.
 Department of the Interior, that department of the government of the United States which has charge of pensions, patents, public lands and surveys, the Indians, education, etc.; that department of the government of a country which is specially charged with the internal affairs of that country; the home department.
 Secretary of the Interior, the cabinet officer who, in the United States, is at the head of the Department of the Interior.

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 Secretary of the Interior
      n 1: the position of the head of the Department of the Interior;
           "the position of Interior Secretary was created in 1849"
           [syn: Interior Secretary]
      2: the person who holds the secretaryship of the Interior
         Department; "President Taylor appointed Thomas Ewing as
         the first Secretary of the Interior" [syn: {Interior
         Secretary]