roof roof /ˈrʊf/

noun

1. () A protective covering that covers or forms the top of a building  ( roof )
   a protective covering that covers or forms the top of a building
    The roof needed to be replaced after the big storm caused some damage
   The roof needed to be replaced after the big storm caused some damage
   
   
2. () Protective covering on top of a motor vehicle  ( roof )
   protective covering on top of a motor vehicle
    The car's roof was damaged during a hailstorm and had to be replaced
   The car's roof was damaged during a hailstorm and had to be replaced
   
3. An upper limit on what is allowed  ( cap , roof , ceiling )
   an upper limit on what is allowed
    He put a ceiling on the number of women who worked for him
   he put a ceiling on the number of women who worked for him
    There was a roof on salaries
   there was a roof on salaries
    They established a cap for prices
   they established a cap for prices
   
4. The inner top surface of a covered area or hollow space  ( roof )
   the inner top surface of a covered area or hollow space
    The roof of the cave was very high
   the roof of the cave was very high
    I could see the roof of the bear's mouth
   I could see the roof of the bear's mouth
   
   

verb

1. () Provide a building with a roof; cover a building with a roof  ( roof )
   provide a building with a roof; cover a building with a roof