Open English Wordnet
Nouns
(n)roofa protective covering that covers or forms the top of a building (n)roofprotective covering on top of a motor vehicle (n)roofthe 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” (n)ceiling, roof, capan 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” Verbs
(v)roofprovide a building with a roof; cover a building with a roof