1. (n.) A current of air or water running back, or in a direction contrary to the main current.

2. (n.) A current of water or air moving in a circular direction; a whirlpool.

3. (v. i.) To move as an eddy, or as in an eddy; to move in a circle.

4. (v. t.) To collect as into an 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