1. A large wave or undulating mass of something, as of water, smoke, cloth or sound
   "Billows of smoke rose from the chimney";
   - surge

1. Swell or surge outward, typically due to air or water movement
   "smoke billowed up into the sky"; "The curtains billowed in the breeze"
    
2. Become inflated
   "The sails billowed";
   - balloon, inflate
    
3. Move with great difficulty
   "The soldiers billowed across the muddy riverbed"

Derived forms: billowed, billows, billowing

Type of: expand, go, locomote, move, moving ridge, soar, surge, travel, wave, zoom

Encyclopedia: Billow, Andrew