Definitions of American:

• noun:   a native or inhabitant of a North American or Central American or South American country
• noun:   a native or inhabitant of the United States
• noun:   the English language as used in the United States
• adjective:   of or relating to or characteristic of the continents and islands of the Americas

  Example: "The American hemisphere"

• adjective:   of or relating to the United States of America or its people or language or culture

  Example: "American citizens"

• name:  A surname (very rare: popularity rank in the U.S.: #88555)