The Collaborative International Dictionary of English v.0.48:

Forked \Forked\, a.
   1. Formed into a forklike shape; having a fork; dividing into
      two or more prongs or branches; furcated; bifurcated;
      zigzag; as, the forked lighting.
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            A serpent seen, with forked tongue.   --Shak.
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   2. Having a double meaning; ambiguous; equivocal.
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   Cross forked (Her.), a cross, the ends of whose arms are
      divided into two sharp points; -- called also cross
      double fitch['e]. A cross forked of three points is a
      cross, each of whose arms terminates in three sharp
      points.

   Forked counsel, advice pointing more than one way;
      ambiguous advice. [Obs.] --B. Jonson. -- Fork"ed*ly,
      adv. -- Fork"ed*ness, n.
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