What does the cryptic crossword clue "Clean house again (6)" mean?

The definition is "Clean". The wordplay uses a charade (building blocks). HO (abbreviation="house") + OVER (synonym="again") = HOOVER; definition: "Clean" The answer is HOOVER.

Clean house again (6)

Guardian Cryptic #27945 | 15 Across | 2019-10-07 flower

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Independent Cryptic #12108 (2025-07-30)