An Aboriginal.

(obsolete, slang) First-rate, excellent.

plural of first party

(business, commerce) An individual or entity directly involved in a given transaction, such as a buyer or seller. / (law) The plaintiff in a lawsuit.

(generic) A nuclear family that is or was a First Family, when speaking non-specifically.

(generic) A man that is or was a spouse of the political chief executive, when speaking non-specifically.

Of first resort. / Of prime quality or importance. / At the lowermost supervisory level.

The dog belonging to the President of the United States of America

Synonym of First World War (“World War I”)

(rail transport, also used adverbially) Of a steam locomotive with a tender (a tender locomotive), when it is operating in reverse, with the tender leading.