Dictionary  roofPronunciation: (rOOf, roof), [key] —n., pl. roofs, —v. —n. 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. 7. go through the roof, a. to increase beyond all expectations: Foreign travel may very well go through the roof next year. b. Also,hit the roof, Informal.to lose one's temper; become extremely angry. 8. raise the roof, Informal. a. to create a loud noise: The applause raised the roof. b. to complain or protest noisily: He'll raise the roof when he sees that bill. —v.t. to provide or cover with a roof. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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