rattlepate

Noun

 * 1)  A chatterbox; someone who talks a lot.
 * 2) * 1848, Charles Fenno Hoffman, "The Man in the Reservoir", Greatest Short Stories, Volume 1, P. F. Collier & Son (1915), page 124:
 * "The place seems suggestive of fancies to you?" we observed in reply to the rattlepate.