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Definition of roof
(Entry 1 of 2)
1a(1) : the cover of a building
(2) : material used for a roof : roofing
b : the roof of a dwelling conventionally designating the home itself
didn't have a roof over my head they share the same roof
3a : the vaulted upper boundary of the mouth
b : a covering structure of any of various parts of the body
roof of the skull
4 : something suggesting a roof: such as
a : a canopy of leaves and branches
b : the top over the passenger section of a vehicle
through the roof
: to an extremely or excessively high level
prices went through the roof
roof
verbroofed; roofing; roofs
Definition of roof (Entry 2 of 2)
1a : to cover with or as if with a roof
b : to provide with a particular kind of roof or roofing —often used in combinationslate-roofed houses
2 : to constitute a roof over
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Time Traveler for roof
The first known use of roof was before the 12th century
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