greenhouse
/ˈɡriːnhaʊs/
Noun
greenhouseSingular
greenhousesPlural
1
A building with glass walls and roof used for growing plants that need warmth and protection.
They grow tomatoes in a greenhouse during winter.
2
Used attributively to describe the warming effect of certain atmospheric gases (as in 'greenhouse effect' or 'greenhouse gas').
Greenhouse gases trap heat in the atmosphere.