[1] : The Collaborative International Dictionary of English v.0.48

swirl \swirl\, v. t.  i. imp.  p. p. swirled; p. pr.  vb.
   n. swirling. akin to norw. svirla to whirl, freq. of
   sverra to whirl, dan. svirre, g. schwirren to whiz, to buzz.
   root177. see swarm, n.
   to whirl, or cause to whirl, as in an eddy. "the river
   swirled along." --c. kingsley.
   1913 webster
see also:
swirled swirling swarm 

[2] : WordNet (r) 2.0

swirling
     adj : moving or driven rapidly in a rotary or twisting motion; "a
           tornado's whirling winds"; "swirling currents" syn: whirling
see also:
whirling 

[3] : Moby Thesaurus II by Grady Ward, 1.0

67 moby thesaurus words for "swirling":
   ado, agitation, angular momentum, angular motion, angular velocity,
   axial motion, bowling, brouhaha, bustle, centrifugation,
   circulation, circumgyration, circumrotation, commotion,
   disturbance, ebullience, ebullition, eddy, effervescence,
   embroilment, feery-fary, ferment, fermentation, flurry,
   full circle, fume, gyrating, gyration, hurly-burly, hurry,
   hurry-scurry, pell-mell, perturbation, pivoting, reeling,
   revolution, revolving, roll, rolling, rotating, rotation,
   rotational motion, ruffle, spin, spinning, stir, swinging, swirl,
   swiveling, to-do, trolling, trundling, tumult, turbination,
   turbulence, turmoil, turning, twirling, uproar, volutation,
   volution, vortex, wheeling, whir, whirl, whirling, yeastiness

Swirling >> S Words
Swirling, definition of term: Swirling
swirling_pag1.html