1. (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.
2. (专业的)清洁工
A cleaner is someone whose job is to clean a particular type of thing.
e.g. He was a window cleaner.
他是个洗窗工。
3. 清洗剂;去污剂
A cleaner is a substance used for cleaning things.
e.g. ...oven cleaner.
烤箱清洁剂
e.g. ...abrasive cleaners.
擦洗剂
4. 清洁器;吸尘器
A cleaner is a device used for cleaning things.
e.g. ...an air cleaner.
空气净化器
5. 干洗店
A cleaner or a cleaner's is a shop where things such as clothes are dry-cleaned.
6. 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.