Definition of storm cloud noun from the Oxford Advanced Learner's Dictionary


storm cloud

BrE BrE//ˈstɔːm klaʊd//
; NAmE NAmE//ˈstɔːrm klaʊd//
[usually plural]
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a dark cloud that you see when bad weather is coming Above the mountains, storm clouds were gathering. (figurative) The storm clouds of revolution were gathering.
See the Oxford Advanced American Dictionary entry: storm cloud