n An indigenous inhabitant of the Americas; an American Indian. (Now chiefly with qualifying word.) (defdate|from 16th c.)
n An inhabitant of the Americas. More often this is specified as either North American, Central American or South American.
n Originally, a native or inhabitant of the British North American colonies of European descent; now, a person born in, or a citizen or inhabitant of, the United States of America. (defdate|from 17th c.)