Sentence:  And the brooms lined up behind the buckets, and the dusters, dustpans, cloths and brushes, feather dusters and sweepers all lined up bravely to do battle with the thousand upright <WSD>Hoovers</WSD>. The <WSD>Hoovers</WSD> charged, engines roaring and bags fully inflated. 
Meaning of the word marked with <WSD> tags:  A vacuum cleaner, irrespective of brand.