[bil-oh] 
| 1. | a great wave or surge of the sea. |
| 2. | any surging mass: billows of smoke. |
| 3. | to rise or roll in or like billows; surge. |
| 4. | to swell out, puff up, etc., as by the action of wind: flags billowing in the breeze. |
| 5. | to make rise, surge, swell, or the like: A sudden wind billowed the tent alarmingly. |
| bil·low (bĭl'ō) n.
v. intr.
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. |