Antonym: floor. Similar words: go off, room, troop, bedroom, bathroom, courtroom, mushroom, classroom. Meaning: [ruːf] 
n. 1. a protective covering that covers or forms the top of a building 2. protective covering on top of a motor vehicle. v. provide a building with a roof; cover a building with a roof.
n. 1. a protective covering that covers or forms the top of a building 2. protective covering on top of a motor vehicle. v. provide a building with a roof; cover a building with a roof. 
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271) The builders worked on wooden platforms, suspended by ropes from the roof of the building.
272) The disco party went through the roof until the small hours of the morning.
273) Water was splashing down from a large hole in the roof.
274) The roof of the theatre was boldly defined against the sky.
275) The roof of the new tunnel hasn't been properly supported; it shows signs of falling in.
276) The weight of the cathedral roof is carried by two rows of pillars.
277) The roof of the old house will cave in any time.
278) The roof timbers were affected by rot and insect attack.
279) He raised the roof at the conference when he sang his own version of the socialist anthem,(sentencedict .com) The Red Flag.
280) They could hear raindrops spattering on the roof of the caravan.
281) All the rainwater on the roof runs into the pipe.
282) As long as you live under my roof, you'll do as I say.
283) The silence was broken only by the steady drip, drip of water from the roof.
284) The wind dislodged one or two tiles from the roof.
285) The stone made a dent in the roof of the car.
286) The builders did a really poor job of fixing our roof.
287) You have to go up four flights of steps to get up to the roof.
288) The money collected will be put towards repairing the church roof.
289) More timbers are needed to bolster the roof of the mine.
290) A high cupola of glass and iron crowned the roof.
291) This charming cottage dates back to the 15 th century and is as pretty as a picture, with its thatched roof and secluded garden.
292) Though the roof has been mended,the rainwater is still running in.
293) The roof pitches sharply to the rear of the house.
294) We put a bucket under the hole in the roof to catch the drips.
295) There are two large wooden supports that hold up the roof.
296) What should I use to seal the joint between a carport roof and the house wall?
297) We can probably strap the cases to the roof of her car.
298) We stood on the roof watching the planes fly over.
299) The air was fresh, courtesy of three holes in the roof.
300) There are various stores and restaurants all under one roof.