1. • noun - a protective covering that covers or forms the top of a building
   • noun - protective covering on top of a motor vehicle
   • noun - the inner top surface of a covered area or hollow space
   • noun - an upper limit on what is allowed
   • verb - provide a building with a roof
2. • The exterior surface and its supporting structures on the top of a building.
   • The upper exterior surface of a dwelling as a symbol of the home itself: three generations living under one roof.
   • The top covering of something: the roof of a car.
   • The upper surface of an anatomical structure, especially one having a vaulted inner structure: the roof of the mouth.
   • The highest point or limit; the summit or ceiling: A roof on prices is needed to keep our customers happy.
   • To grow, intensify, or rise to an enormous, often unexpected degree: Operating costs went through the roof last year.
   • To become extremely angry: When I told her about breaking the window, she went through the roof.
   • To be extremely noisy and boisterous: The participants plan to dance, drink, and generally raise the roof at tonight’s party.
   • To complain loudly and bitterly: Angry tenants finally raised the roof about their noisy neighbors.
3. • v - to provide with a roof (the external upper covering of a building)

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