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1. A large wave or swell of water.
2. A great swell, surge, or undulating mass, as of smoke or sound.
v. bil·lowed, bil·low·ing, bil·lows
1. To surge or roll in billows.
2. To swell out or bulge: sheets billowing in the breeze.
To cause to billow: wind that billowed the sails.

[From Old Norse bylgja, a wave; see bhelgh- in Indo-European roots.]

bil′low·i·ness n.
bil′low·y adj.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.billowing - characterized by great swelling waves or surgesbillowing - characterized by great swelling waves or surges; "billowy storm clouds"; "the restless billowing sea"; "surging waves"
stormy - (especially of weather) affected or characterized by storms or commotion; "a stormy day"; "wide and stormy seas"


adjective roll, rise, rush, swell, swirl, gush, heave the billowing dust