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90% of the time, speakers of English use just 7,500 words in speech and writing. These words appear in red, and are graded with stars. One-star words are frequent, two-star words are more frequent, and three-star words are the most frequent.



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noun rock pronunciation in British English /rɒk/
Word Forms
  1. 1
    [uncountable] the hard solid substance that forms part of the Earths surface

    Rainwater flows through soil and porous rock to reach underground streams.

    We had to dig down through a twelve-inch layer of rock.

    1. a.
      [countable] a large piece of stone that rises up from the ground or from under the sea

      a castle built on a big rock

      the Rock of Gibraltar

    2. b.
      [countable] a large piece of stone lying on the ground

      She ran over the fallen rocks towards him.

    3. c.
    4. d.
      [countable] American a small stone

      Protesters threw rocks at the police.

  2. 2



    rock music

    [uncountable] rock music

    a rock star

    rock concerts



… a teaching method in which groups of children learn independently using a computer linked to the internet

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