The Collaborative International Dictionary of English v.0.48:

Story-teller \Sto"ry-tell`er\, n.
   1. One who tells stories; a narrator of anecdotes,incidents,
      or fictitious tales; as, an amusing story-teller.
      [1913 Webster]

   2. An historian; -- in contempt. --Swift.
      [1913 Webster]

   3. A euphemism or child's word for "a liar."
      [1913 Webster]

WordNet (r) 3.0 (2006):

storyteller
    n 1: someone who tells a story [syn: narrator, storyteller,
         teller]
    2: someone who tells lies [syn: storyteller, fibber,
       fabricator]