(transitive) To free from dirt; to clean, to purify. / (transitive) To spiritually purify; to free from guilt or sin; to purge.

A person whose occupation is to clean floors, windows and other things. / A device that cleans, such as the vacuum cleaner. / A substance used for cleaning, a cleaning agent.

comparative form of clean: more clean

A domestic or industrial mobile machine for cleaning floors and similar surfaces that draws dust and other particles into a container (a cyclonic type bin, or a filter bag) by the suction created by an electric motor driving a fan.

Being habitually clean, practising good hygiene. / (obsolete) Cleansing; fitted to remove moisture; dirt, etc. / (obsolete) Adroit; dexterous; artful.

Any device that filters or otherwise cleans air; an air purifier.

The property of being cleanly, or habitually clean; good hygiene. / Ritual purity.

In a clean way, neatly. / Not causing a mess or unnecessary damage. / Innocently; without stain. / Adroitly; dexterously

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.)

plural of cleaner