Definition of “roof” - English Dictionary

“roof” in British English

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roofnoun [ C ]

uk /ruːf/ us /ruːf/

roofverb [ T often passive ]

uk /ruːf/ us /ruːf/

to put a roof on a building

-roofed
suffix uk / -ruːft/ us / -ruːft/

a slate-roofed house

Phrasal verb(s)

(Definition of “roof” from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

“roof” in American English

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roofnoun [ C ]

us /ruf, rʊf/

the covering that forms the top of a building, vehicle, or other object:

The school has a flat roof.

The roof of your mouth is the mouth’s upper, inside surface:

Peanut butter sticks to the roof of your mouth.
roof
verb [ T ] us /ruf, rʊf/

They roofed the house with old-fashioned shingles.

(Definition of “roof” from the Cambridge Academic Content Dictionary © Cambridge University Press)