Sentence:  This time Robbie was dreaming about Mr Spatchley's ducks. They had all come alive and were flying around the office whilst Robbie desperately tried to <WSD>hoover</WSD> the floor. There were ducks everywhere, on the desk and mantelpiece and padding around on the floor, knocking things over and quacking indignantly. 
Meaning of the word marked with <WSD> tags:  To clean (a room, etc.) with a vacuum cleaner, irrespective of brand.