CLOUD - [noun] a white or grey mass of small drops of water floating in the sky; a mass of smoke or dust
Examples of use
I opened the door and walked into a cloud of dust. The room hadn't been cleaned for ages.
Black clouds are gathering. It's going to rain today.
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English speaking practise
Remember that if you don't use that word in English conversations or writing you'll forget it in a short time. So the best thing you can do to learn this word is just trying to use it in speaking or writing. Remember also that practise is the key to fluent english speaking.
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