EDDY

eddy. Eddy, n. a circular motion of wind or water

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Ed″dy (ĕd″dy̆), n.; pl. Eddies (–dĭz). [[Prob. fr. Icel. iða; cf. Icel. pref. ið- back, AS. ed-, OS. idug-, OHG. ita-; Goth. id-.]] 1. 1. A current of air or water running back, or in a direction contrary to the main current.
2. 2. A current of water or air moving in a circular direction; a whirlpool.
And smiling eddies dimpled on the main. Dryden. Wheel through the air, in circling eddies play. Addison. Used also adjectively; as, eddy winds. Dryden.