(US) Any bill that is legal tender in the US (originally printed with green and black ink) issued by the Federal Reserve. / The United States dollar.

plural of greenback

A movement advocating for the inflation of the US currency.

plural of Greenbacker

(historical, US) A member of the Greenback Party, who supported greenback or paper money, and opposed the resumption of specie payments.

plural of greenbacker

Alternative form of Greenbacker