1. Characterized by great swelling waves or surges
   "the restless billowing sea";
   - billowy, surging

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"

See also: procellous [archaic], stormy

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

Encyclopedia: Billow, Andrew