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roof

[roof, roo f] /ruf, rʊf/
noun, plural roofs.
1.
the external upper covering of a house or other building.
2.
a frame for supporting this:
an open-timbered roof.
3.
the highest part or summit:
The Himalayas are the roof of the world.
4.
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.
5.
a house.
6.
Mining. the rock immediately above a horizontal mineral deposit.
verb (used with object)
7.
to provide or cover with a roof.
Idioms
8.
go through the roof,
  1. to increase beyond all expectations:
    Foreign travel may very well go through the roof next year.
  2. Also, hit the roof. Informal. to lose one's temper; become extremely angry.
9.
raise the roof, Informal.
  1. to create a loud noise:
    The applause raised the roof.
  2. to complain or protest noisily:
    He'll raise the roof when he sees that bill.
Origin
900
before 900; Middle English (noun); Old English hrōf; cognate with Dutch roef cover, cabin, Old Norse hrōf
Related forms
rooflike, adjective
reroof, verb (used with object)
self-roofed, adjective
underroof, noun
unroofed, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for roofs
  • The winds blew down power lines, trees and crops and blew roofs off houses.
  • Now the rains turn the roofs to sludge, which causes buildings to collapse.
  • Stolid modern farm buildings with red-tile roofs stood in place of the huts of the ancient tribesmen.
  • But nowhere else do so many people climb on their roofs to install solar panels.
  • Dark to come from under the faint red roofs of mouths.
  • Even the sparrows on the roofs and the rats in the sewers were growing scarce.
  • New and expensive roofs have been put on for the comfort of such tenants as might choose to use them.
  • At each station people filled the windows of the houses, the seats built up around the sides of the square, and even the roofs.
  • Solar will soon be cheap enough to start replacing roofing shingles, gravel roofs and building facades.
  • Lately, investors would rather fund companies that put solar panels on roofs than ones that manufacture the solar panels.
British Dictionary definitions for roofs

roof

/ruːf/
noun (pl) roofs (ruːfs; ruːvz)
1.
  1. a structure that covers or forms the top of a building
  2. (in combination): the rooftop
  3. (as modifier): a roof garden
2.
the top covering of a vehicle, oven, or other structure: the roof of a car
3.
(anatomy) any structure that covers an organ or part: the roof of the mouth
4.
a highest or topmost point or part: Mount Everest is the roof of the world
5.
a house or other shelter: a poor man's roof
6.
(mountaineering) the underside of a projecting overhang
7.
(informal) hit the roof, go through the roof
  1. to get extremely angry; become furious
  2. to rise or increase steeply
8.
raise the roof
  1. to create a boisterous disturbance
  2. to react or protest heatedly
verb
9.
(transitive) to provide or cover with a roof or rooflike part
Derived Forms
roofer, noun
roofless, adjective
rooflike, adjective
Word Origin
Old English hrōf; related to Middle Dutch, Old Norse hrōf
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for roofs

roof

n.

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.

v.

early 15c., from roof (n.). Related: Roofed; roofing.

Online Etymology Dictionary, © 2010 Douglas Harper
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roofs in Medicine

roof (rōōf, ruf)
n.
The upper surface of an anatomical structure, especially one having a vaulted inner structure.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Slang definitions & phrases for roofs

roof

Related Terms

fall off the roof, raise the roof


The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D.
Copyright (C) 2007 by HarperCollins Publishers.
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Idioms and Phrases with roofs

roof

The American Heritage® Idioms Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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8
8
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