Source : Webster's Revised Unabridged Dictionary (1913)

Yankee-Doodle \Yan`kee-Doo"dle\, n.
   1. The name of a tune adopted popularly as one of the
      national airs of the United States.

   2. Humorously, a Yankee.

            We might have withheld our political noodles From
            knocking their heads against hot Yankee-Doodles.
                                                  --Moore.

Source : WordNet®

Yankee-Doodle
     n : an American [syn: {Yankee}, {Yank}]