Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “billow”

billow

verb [I] uk   /ˈbɪl.əʊ/ us    /-oʊ/
to spread over a large area, or (especially of things made of cloth) to become filled with air and appear to be larger: Smoke billowed (out) from the burning building. The sheets/shirts hanging on the line billowed in the breeze. We watched the boats with their billowing sails.Spreading and scatteringBecoming biggerEnlarging and inflating
billow
noun [C usually plural] uk   us  
billows of smokeClouds, dew, fog and steam
(Definition of billow from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of billow?
Add Cambridge dictionaries to your browser to your website

Definitions of “billow” in other dictionaries

Word of the Day

improvisation

a performance that an actor, musician, etc. has not practised or planned

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More