billow

Noun

• a large sea wave

Verb

• become inflated
  • The sails ballooned
    

• rise and move, as in waves or billows
  • The army surged forward
    

• move with great difficulty
  • The soldiers billowed across the muddy riverbed
    

• rise up as if in waves
  • smoke billowed up into the sky
    

Related words

• Synonyms: 
  surge , balloon , inflate , heave , wallow