Hoover/ˈhuːvər/ Definition 1 of 3Pro Tip 1/3Brand Origin Hoover started as a brand name but is now used generally for vacuum cleaners. Could you fetch the hoover from the cupboard? Pro Tip 2/3Cultural Specific In the UK, 'hoover' is commonly used, but in other places, 'vacuum' is preferred. He's hoovering the carpet after spilling some crumbs. Pro Tip 3/3Informal 'Hoover' is casual; use 'vacuum cleaner' for more formal writing or speaking. My mum asked me to hoover the stairs before guests arrive.