What does the word "spangled" mean?

Oh, say! Can you ________________

What so __________ we hailed

Whose broad_______________and bright ______________

And the _____________________ red glare

O'er the land of the _________________and the home of the ____________?

The bombs bursting in ___________________

by the dawn's early ______________________

At the _________________ last gleaming.

BONUS QUESTION: The Star Spangled Banner became the U.S. National Anthem in 1916.