The Collaborative International Dictionary of English v.0.48:

fiddle-faddle \fid"dle-fad`dle\, n.
   A trifle; trifling talk; nonsense. [Colloq.] --Spectator.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

fiddle-faddle \fid"dle-fad`dle\, v. i.
   To talk nonsense. [Colloq.] --Ford.
   [1913 Webster]

WordNet (r) 3.0 (2006):

fiddle-faddle
    n 1: trivial nonsense [syn: balderdash, fiddle-faddle,
         piffle]