The Collaborative International Dictionary of English v.0.48:

Tattle \Tat"tle\, v. i. [imp. & p. p. Tattled; p. pr. & vb. n.
   Tattling.] [Akin to OE. tateren, LG. tateln, D. tateren to
   stammer, and perhaps to E. titter.]
   1. To prate; to talk idly; to use many words with little
      meaning; to chat.
      [1913 Webster]

            The tattling quality of age, which is always
            narrative.                            --Dryden.
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   2. To tell tales; to communicate secrets; to be a talebearer;
      as, a tattling girl.
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