eddyEnglishOxford American Thesauruseddy noun the river was smooth apart from the small eddies at the edge: swirl, whirlpool, vortex, maelstrom; countercurrent, counterflow; North American, informal suckhole; literary Charybdis.verb cold air eddied around her: swirl, whirl, spiral, wind, churn, swish, circulate, revolve, spin, twist; flow, ripple, stream, surge, seethe, billow, foam, froth, boil, ferment.