The Collaborative International Dictionary of English v.0.48:

Tonguester \Tongue"ster\, n.
   One who uses his tongue; a talker; a story-teller; a gossip.
   [Poetic.]
   [1913 Webster]

         Step by step we rose to greatness; through the
         tonguesters we may fall.                 --Tennyson.
   [1913 Webster]