A vacuum cleaner, also known as a vacuum or hoover, is an electric device that creates suction to clean floors, upholstery, and other surfaces. It uses a dustbag or cyclone to collect dirt for later disposal.

Vacuum cleaners come in various sizes and types, from small handheld devices to larger canister models for home use. There are also central vacuum systems for homes and massive industrial machines capable of handling large amounts of dirt. Self-propelled vacuum trucks are used for cleaning up spills and contaminated soil. Some specialized models can clean both solids and liquids.

In essence, a vacuum cleaner is a device that uses suction to remove dirt, and it has evolved into a wide range of models for different purposes. As a well-known household appliance, it plays a crucial role in maintaining cleanliness in our surroundings.