billow Meaning in the Cambridge English Dictionary
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Meaning of “billow” in the English Dictionary

"billow" in British English

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billowverb [I]

uk   /ˈbɪl.əʊ/  us   /-oʊ/
to ​spread over a ​largearea, or (​especially of things made of ​cloth) to ​becomefilled with ​air and ​appear to be ​larger: Smoke billowed (out) from the ​burningbuilding. The ​sheets/​shirtshanging on the ​line billowed in the ​breeze. We ​watched the ​boats with ​their billowing ​sails.
billow
noun [C usually plural] uk   us  
billows ofsmoke
(Definition of billow from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"billow" in American English

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billowverb [I]

 us   /ˈbɪl·oʊ/
to ​spread over a ​largearea, or (esp. of ​items made of ​cloth) to ​becomefilled with ​air and ​appear to be ​larger: The ​building is ​draped in ​blueplastic sheeting that ​flaps and billows like a ​sail.

billownoun [C usually pl]

 us   /ˈbɪl·oʊ/
a ​largewave or any ​large, ​swellingmass: billows of ​smoke
(Definition of billow from the Cambridge Academic Content Dictionary © Cambridge University Press)
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