1.Definition: a protective covering that covers or forms the top of a building

Category: Objects

2.Definition: 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"

Related Noun(s):cap, ceiling

Category: General

3.Definition: protective covering on top of a motor vehicle

Category: Objects

4.Definition: 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"

Category: Objects