American English

Definition of billow verb from the Oxford Advanced American Dictionary



    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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