subs. phr. (common).A chatterbox: also TATTLER = a gossip: see TITTLE-TATTLE.
c. 1709. WARD, Terræ Filius, I. iv. 36. She is an invidious TATTLE-BOX that rattles people out of their Senses.
1834. W. H. AINSWORTH, Rookwood, iv. vi. Oliver Whiddlesthe TATLER old! Telling what best had been left untold.