Definition of greenhouse noun from the Oxford Advanced Learner's Dictionary

 

greenhouse

 noun
noun
BrE BrE//ˈɡriːnhaʊs//
 
; NAmE NAmE//ˈɡriːnhaʊs//
 
Buildings, Growing crops, Gardening, In the garden
 
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a building with glass sides and a glass roof for growing plants in See related entries: Buildings, Growing crops, Gardening, In the garden
See the Oxford Advanced American Dictionary entry: greenhouse