What is the meaning of Cleaner?

A person whose occupation is to clean things, especially rooms, floors, and windows.

A device that cleans, such as the vacuum cleaner.

A substance used for cleaning; especially, one retailed for that purpose and meant for use on things other than one's own body.

A professional laundry or dry cleaner (business). (This form is now interpreted as plural and usually spelled without an apostrophe, even in official usage, to justify the removal of the apostrophe. It was traditionally spelled cleaner's with an apostrophe because this is grammatically correct, as can be seen with forms such as go to the doctor's, which cannot be reinterpreted as plural.)

A fixer; a person who disposes of bodies and evidence.

comparative form of clean: more clean

to clean

Source: wiktionary.org