(n) a poem written by Francis Scott Key during the War of 1812 was set to music and adopted by Congress in 1931 as the national anthem of the United States
a. Spangled or studded with stars. [ 1913 Webster ]
Star-spangled banner, the popular name for the national ensign of the United States; also the name of a poem, the words of which were composed by Francis Scott Key, which was adopted as the national anthem of the United States. F. S. Key. [ 1913 Webster +PJC ]