The Collaborative International Dictionary of English v.0.48:

Eddy \Ed"dy\, v. i. [imp. & p. p. Eddied; p. pr. & vb. n.
   Eddying.]
   To move as an eddy, or as in an eddy; to move in a circle.
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         Eddying round and round they sink.       --Wordsworth.
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The Collaborative International Dictionary of English v.0.48:

Eddy \Ed"dy\, v. t.
   To collect as into an eddy. [R.]
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         The circling mountains eddy in
         From the bare wild the dissipated storm. --Thomson.
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The Collaborative International Dictionary of English v.0.48:

Eddy \Ed"dy\ ([e^]d"d[y^]), n.; pl. Eddies ([e^]d"d[i^]z).
   [Prob. fr. Icel. i[eth]a; cf. Icel. pref. i[eth]- back, AS.
   ed-, OS. idug-, OHG. ita-; Goth. id-.]
   1. A current of air or water running back, or in a direction
      contrary to the main current.
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   2. A current of water or air moving in a circular direction;
      a whirlpool.
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            And smiling eddies dimpled on the main. --Dryden.
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            Wheel through the air, in circling eddies play.
                                                  --Addison.
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   Note: Used also adjectively; as, eddy winds. --Dryden.
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U.S. Gazetteer (1990):

Eddy, TX
  Zip code(s): 76524

Moby Thesaurus II by Grady Ward, 1.0:

73 Moby Thesaurus words for "eddy":
   Charybdis, Maelstrom, ado, agitation, back, back stream, backflow,
   backwash, backwater, brouhaha, bustle, centrifugate, centrifuge,
   commotion, countercurrent, counterflow, counterflux, cyclone,
   disturbance, dizzy round, dust devil, ebullience, ebullition,
   effervescence, embroilment, feery-fary, ferment, fermentation,
   flurry, fume, gulf, gurge, gyre, hurly-burly, hurricane, hurry,
   hurry-scurry, maelstrom, pell-mell, perturbation, pirouette, purl,
   rat race, reel, refluence, reflux, regurgitation, round, ruffle,
   spin, stir, surge, swirl, swirling, to-do, tornado, tumult,
   turbulence, turmoil, turn, twirl, twister, typhoon, uproar, vortex,
   waterspout, wheel, whirl, whirligig, whirlpool, whirlwind, whorl,
   yeastiness