roof

Noun

• an upper limit on what is allowed
  • he put a ceiling on the number of women who worked for him
    
  • there was a roof on salaries
    
  • they established a cap for prices
    

• the inner top surface of a covered area or hollow space
  • the roof of the cave was very high
    
  • I could see the roof of the bear's mouth
    

• protective covering on top of a motor vehicle

• a protective covering that covers or forms the top of a building

Verb

• provide a building with a roof; cover a building with a roof

Related words

• Synonyms: 
  ceiling , cap