Hoovering has finished (4)
I believe the answer is:
over
'finished' is the definition.
(similar in meaning)
'hoovering has' is the wordplay.
'has' indicates the answer is hidden within the clue.
'OVER' can be found hidden inside 'hoovering'.
(Other definitions for over that I've seen before include "Finished - on top of" , "Exceeding - finished" , "Half a dozen deliveries" , "A bowler's round in cricket" , "See 19" .)