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A vacuum cleaner, commonly referred to as a vacuum in the U.S. and a hoover in the UK, is a device that uses an air pump to create a partial vacuum to suck up dust and dirt, usually from floors. The dirt is collected by either a dustbag or a cyclone for later disposal. Vacuum cleaners, which are used in homes as well as in industry, exist in a variety of sizes and models: from small battery-operated hand-held devices to huge stationary industrial appliances that can handle several hundred litres of dust before being emptied. 
Cylinder vacuum cleaner for home use.
From Wikipedia, the free encyclopedia : Specialized cleaning of buildings and industrial cleaning |
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