Definition Of billow
(of fabric) fill with air and swell outward.
her dress billowed out around her
a large undulating mass of something, typically cloud, smoke, or steam.
Flying in across a track of pearl and gold laid by the setting sun across the Atlantic, I watched the island shape itself as a dark mass hardening from a billow of pink sea-level clouds.
Example Of billow
A large cloud of black smoke billowed above their old den, and the ground shook from the force of heavy machinery at work.
A thick cloud of black smoke billowed from the top.
According to the show's host, big and billowy are this year's watchwords for bridal wear, and green could be this year's hot colour - despite old myths about the colour's potential to influence a marriage in the wrong way.
Adam's cloak billowed out behind him as he walked.
After hours of watching the black smoke billow over the top of the mountain, we stood horrified as the flames made their appearance.