Billow

//ˈbɪloʊ// name, noun, verb

name, noun, verb ·Moderate ·High school level

Definitions

Noun
  1. 1
    A large wave, swell, surge, or undulating mass of something, such as water, smoke, fabric or sound

    "[…] Whom the winds waft where'er the billows roll, / From the world's girdle to the frozen pole;"

  2. 2
    a large sea wave wordnet
Verb
  1. 1
    To surge or roll in billows.

    "During the preceding afternoon a heavy North Pacific fog had blown in … Scudding eastward from the ocean, it had crept up and over the redwood-studded crests of the Coast Range mountains, […], billowing steadily eastward, it had rolled up the western slopes of the Siskiyou Range, […]"

  2. 2
    become inflated wordnet
  3. 3
    To swell out or bulge.

    "Her new green flowered-muslin dress spread its twelve yards of billowing material over her hoops and exactly matched the flat-heeled green morocco slippers her father had recently brought her from Atlanta."

  4. 4
    rise and move, as in waves or billows wordnet
  5. 5
    rise up as if in waves wordnet
Show 1 more definition
  1. 6
    move with great difficulty wordnet
Proper Noun
  1. 1
    A surname.

Example

More examples

"One, that bore / the brave Orontes and his Lycian crew, / full in AEneas' sight a toppling wave o'erthrew. / Dashed from the tiller, down the pilot rolled. / Thrice round the billow whirled her, as she lay, / then whelmed below."

Etymology

Etymology 1

From Middle English *bilwe, borrowed from Old Norse bylgja, from Proto-Germanic *bulgijō. Cognates include Danish bølge (“wave”); Norwegian Bokmål bølge (“wave”), Norwegian Nynorsk bylgje (“wave”); Swedish bölja (“wave”); German Low German Bulge, Bulg, Bülg (“billow, wave”); German Bulge (“billow, wave”). Compare bellow, bawl.

Etymology 2

Probably a variant of Bellow or Bellew.

Related phrases

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.