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cloud - definition and synonyms


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noun cloud pronunciation in British English /klaʊd/
Word Forms
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  1. 1
    [countable/uncountable] a white or grey mass of very small drops of water in the sky
    A few white clouds drifted across the sky.
    There’s more cloud than yesterday.
  2. 2
    [countable] a large amount of smoke, dust, steam etc in the air
    a dust cloud
    cloud of: a huge cloud of black smoke
    1. a.
      any large mass in the sky that looks like a cloud
      A thick cloud of flies buzzed around us.
  3. 3
    [countable] something unpleasant that spoils an activity, event, or situation
    a cloud of anxiety/misery/uncertainty
    be/cast a cloud over something: Violent protests cast a cloud over the president’s visit.
    a cloud on the horizon (=something that is likely to spoil a situation): The only cloud on the horizon is the possibility of a hostile takeover.



a course of study which is much shorter than a university course and focuses on the skills you need for a job, especially computer-related skills

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an ancient Roman system of underfloor heating, used to heat houses with hot air; from the Latin 'hypocaustum'

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