From The Collaborative International Dictionary of English v.0.48 :
Star-spangled \Star"-span`gled\ (st[aum]r"-sp[a^][ng]`g'ld), 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]
From WordNet (r) 3.0 (2006) :
Star-Spangled Banner
n 1: the national flag of the United States of America [syn:
American flag, Stars and Stripes, Star-Spangled
Banner, Old Glory]