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roof

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noun [countable] roof pronunciation in British English /ruːf/ 
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singularroof
pluralroofs or rooves
  1. 1
    the top outer part of a building

    The roof is leaking again.

    a thatched roof (=made of straw)

    Synonyms and related words for this sense of roof
    1. a.
      the top outer part of a temporary structure

      Rain pattered on the roof of the tent.

      Synonyms and related words for this sense of roof
    2. b.
      the top outer part of a vehicle

      One man had climbed onto the roof of his car.

  2. 2
    the highest part of an underground area or structure

    rock formations on the roof of the cave

    Synonyms and related words for this sense of roof

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