1. large waves or swells of water
2. large masses of something that move or flow like waves

1. to move or flow in large waves or masses
2. to fill with air and swell outward

Examples

• The ship rode over the ocean billows during the storm.
• Billows of smoke rose from the burning building.
• The curtains billowed in the strong wind.
• Her dress billowed around her as she walked.
• Dark billows of clouds gathered overhead.
• The sail billowed as it caught the wind.
• Steam billowed from the hot springs.