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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.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.


adjective roll, rise, rush, swell, swirl, gush, heave the billowing dust
Collins Thesaurus of the English Language – Complete and Unabridged 2nd Edition. 2002 © HarperCollins Publishers 1995, 2002
References in classic literature ?
At this hour of the day it was her custom to ride one of those small thoats that are the saddle animals of the red Martians, but the sight of the billowing clouds lured her to a new adventure.
The billowing smoke was filled with horizontal flashes.
Smoke was visible billowing from the roof of the building and extensive damage was visible on the first floor.
Emergency services were called to Hilbre Island, which lies between North Wales and Merseyside, at about 7.30pm on Friday after smoke was seen billowing out of one of its caves.
As shown in the video below, smoke can be seen billowing from the site as the Turkish military convoy continues to pass through the area.
Summary: Kabul [Afghanistan], July 1 (ANI): An explosion was reported near the US Embassy sending smoke billowing over the capital city of Afghanistan on Monday morning.
Images from the scene showed smoke billowing from the business as firefighters from the town battled to bring the blaze under control.
Dense smoke was seen billowing from the brownfield site next to the Cannon pub in Portsmouth Road at around 9.30pm after the fire broke out in the foundations of the building that used to stand there.
A station has reopened after it was evacuated when thick smoke was seen billowing from a train.
When they arrived at the home, smoke was billowing from the back.
Summary: Thick smoke seen billowing over industrial area
Summary: The footage shows the cathedral burning in the background with thick smoke billowing into the sky.