Definition of billow verb from the Oxford Advanced American Dictionary

     

    billow

     verb
    verb
    NAmE//ˈbɪloʊ//
     
    Verb Forms present simple I / you / we / they billow
     
    he / she / it billows
     
    past simple billowed
     
    -ing form billowing
     
     
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  1. 1[intransitive] (of a sail, skirt, etc.) to fill with air and swell out The curtains billowed in the breeze.
  2. 2 [intransitive] if smoke, cloud, etc. billows, it rises and moves in a large mass A huge cloud of smoke billowed out of the chimney.
See the Oxford Advanced Learner's Dictionary entry: billow

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