Definition of 'billow'

Noun

1. a large sea wave
      Synonyms: surge

Verb

1. rise up as if in waves; "smoke billowed up into the sky"
      Synonyms: wallow
2. move with great difficulty; "The soldiers billowed across the muddy riverbed"
3. rise and move, as in waves or billows; "The army surged forward"
      Synonyms: surge heave
4. become inflated; "The sails ballooned"
      Synonyms: balloon inflate

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