The Collaborative International Dictionary of English v.0.48:

Furies \Fu"ries\, n. pl.
   See Fury, 3.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Fury \Fu"ry\, n.; pl. Furies. [L. furia, fr. furere to rage:
   cf. F. furie. Cf. Furor.]
   1. Violent or extreme excitement; overmastering agitation or
      enthusiasm.
      [1913 Webster]

            Her wit began to be with a divine fury inspired.
                                                  --Sir P.
                                                  Sidney.
      [1913 Webster]

   2. Violent anger; extreme wrath; rage; -- sometimes applied
      to inanimate things, as the wind or storms; impetuosity;
      violence. "Fury of the wind." --Shak.
      [1913 Webster]

            I do oppose my patience to his fury.  --Shak.
      [1913 Webster]

   3. pl. (Greek Myth.) The avenging deities, Tisiphone, Alecto,
      and Meg[ae]ra; the Erinyes or Eumenides.
      [1913 Webster]

            The Furies, they said, are attendants on justice,
            and if the sun in heaven should transgress his path
            would punish him.                     --Emerson.
      [1913 Webster]

   4. One of the Parc[ae], or Fates, esp. Atropos. [R.]
      [1913 Webster]

            Comes the blind Fury with the abhorred shears,
            And slits the thin-spun life.         --Milton.
      [1913 Webster]

   5. A stormy, turbulent violent woman; a hag; a vixen; a
      virago; a termagant.

   Syn: Anger; indignation; resentment; wrath; ire; rage;
        vehemence; violence; fierceness; turbulence; madness;
        frenzy. See Anger.
        [1913 Webster]

Moby Thesaurus II by Grady Ward, 1.0:

21 Moby Thesaurus words for "Furies":
   Alecto, Fury, Megaera, Nemesis, Tisiphone, avenger, burning rage,
   furious rage, furor, fury, passion, rage, revanchist,
   tearing passion, the Erinyes, the Eumenides, the Furies,
   towering rage, vehemence, vindicator, violence