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billow

C2
Uncommon

Pronunciation

UK

  • /bˈɪləʊ/

US

  • /ˈbɪloʊ/

Meanings

Verb

  1. to swell outward or move in large soft waves

Noun

  1. a large swelling wave or rolling mass

Beyond the definition

Imagine a ship's sails catching the wind—they don't just move; they billow, swelling outward in graceful curves. That's the essence of this word. To billow means to swell or surge outward, often describing something soft or light like clouds, curtains, or smoke. It suggests a movement that is both gentle and forceful, full and rounded. You might see storm clouds billow ominously before a downpour, or watch laundry billow on a clothesline in a strong breeze.

The word evokes images of fullness and expansion—think of smoke billowing from a campfire rising into the night sky, or the billowing skirts of a dancer twirling across the stage. It's not just about movement; it's about how something moves—with a rounded, expanding grace.

Examples

  1. 1

    Sailing

    The sail billowed as the boat caught the wind.

  2. 2

    Smoke

    Black smoke billowed out of the factory after the explosion.

    • Patternbillow out of + place/source

      come out in large moving clouds

  3. 3

    Dust

    Dust billowed up from the dry road behind the truck.

    • Patternbillow up from + place/source

      rise and spread in the air

  4. 4

    Curtains

    The curtains billowed inward every time the window was open.

More examples
  1. 5

    Clothing

    Her long skirt billowed around her as she turned.

See also

Similar

Shades of meaning

Contrast

Do not confuse

Used with (collocations)

  • smoke billowed
  • sails billowed
  • curtains billowed
  • billow out

Word family

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Forms and spellings

4 forms open this card.

Main spelling

  • billownounverb

Forms

  • billowing-ing formverbnoun
  • billowspluralnounverb
  • billowedpast tenseverbnoun