Longman Dictionary of Contemporary English homepage

Date: 1500-1600
Origin: Probably from Old Norse bylgja

billow

2 noun
     
Related topics: Nature, Water
billow2 [countable usually plural]
1DNDC a moving cloud or mass of something such as smoke or cloth
2 literaryTTW a wave, especially a very large one
Definition from the Longman Dictionary of Contemporary English
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