"American flag," attested from 1782. Stars and Bars as a name for the Confederate flag is attested from 1863. Star-spangled is attested from 1590s; Star-Spangled Banner "United States flag" is 1814, from Francis Scott Key's poem (printed in the "Baltimore Patriot" Sept. 20).
The national flag of the United States. Its fifty stars represent the fifty states; its thirteen stripes represent the thirteen colonies that became the original states.