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cloud - definition and synonyms


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noun cloud pronunciation in American English /klaʊd/
Word Forms
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  1. 1
    [countable/uncountable] a white or gray 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
    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.



to fall over forwards so that your face hits the ground or another surface

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the activity of exploring abandoned buildings and other manmade structures

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