noun, plural roofs.
- the external upper covering of a house or other building.
- a frame for supporting this: an open-timbered roof.
- the highest part or summit: The Himalayas are the roof of the world.
- something that in form or position resembles the roof of a house, as the top of a car, the upper part of the mouth, etc.
- a house.
- Mining. the rock immediately above a horizontal mineral deposit.
verb (used with object)
- to provide or cover with a roof.
- go through the roof,
- to increase beyond all expectations: Foreign travel may very well go through the roof next year.
- Also hit the roof,Informal.to lose one’s temper; become extremely angry.
- raise the roof, Informal.
- to create a loud noise: The applause raised the roof.
- to complain or protest noisily: He’ll raise the roof when he sees that bill.
noun plural roofs (ruːfs, ruːvz)
- a structure that covers or forms the top of a building
- (in combination)the rooftop
- (as modifier)a roof garden
- the top covering of a vehicle, oven, or other structurethe roof of a car
- anatomy any structure that covers an organ or partthe roof of the mouth
- a highest or topmost point or partMount Everest is the roof of the world
- a house or other sheltera poor man’s roof
- mountaineering the underside of a projecting overhang
- hit the roof or go through the roof informal
- to get extremely angry; become furious
- to rise or increase steeply
- raise the roof
- to create a boisterous disturbance
- to react or protest heatedly
- (tr) to provide or cover with a roof or rooflike part
Old English hrof “roof, ceiling, top, summit; heaven, sky,” also figuratively, “highest point of something,” from Proto-Germanic *khrofam (cf. Old Frisian rhoof “roof,” Middle Dutch roof, rouf “cover, roof,” Dutch roef “deckhouse, cabin, coffin-lid,” Middle High German rof “penthouse,” Old Norse hrof “boat shed”).
No apparent connections outside Germanic. “English alone has retained the word in a general sense, for which the other languages use forms corresponding to OE. þæc thatch” [OED]. Roof of the mouth is from late Old English. Raise the roof “create an uproar” is attested from 1860, originally in U.S. Southern dialect.
early 15c., from roof (n.). Related: Roofed; roofing.
- The upper surface of an anatomical structure, especially one having a vaulted inner structure.
In addition to the idiom beginning with roof
- roof over one’s head, a
- go through the roof
- hit the ceiling (roof)
- like a cat on hot bricks (a hot tin roof)
- raise the roof