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N-COUNT
（大楼的）保洁员，清洁工
A cleaner is someone who is employed to clean the rooms and furniture inside a building.
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N-COUNT
(专业的)清洁工
A cleaner is someone whose job is to clean a particular type of thing.
例句
He was a window cleaner.
他是个洗窗工。
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N-MASS
清洗剂;去污剂
A cleaner is a substance used for cleaning things.
例句
...oven cleaner.
烤箱清洁剂
...abrasive cleaners.
擦洗剂
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N-COUNT
清洁器;吸尘器
A cleaner is a device used for cleaning things.
例句
...an air cleaner.
空气净化器
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N-COUNT
干洗店
A cleaner or a cleaner's is a shop where things such as clothes are dry-cleaned.
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PHRASE
骗走，骗光(钱财)
If someone takes you to the cleaners, they unfairly take most of your money, for example in a business deal or in gambling.