(informal) A person responsible for cleaning or tidying up.

(zoology) Any of a number of swimming decapod crustaceans that clean other organisms of parasites.

plural of cleaner shrimp

A substance, usually a liquid, used to clean drains by unclogging material lodged inside them.

plural of cleaner fish

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.

A person whose job is to clean windows. / A product, such as Windex, used to clean windows.

A piece of flexible wire in which tufted fabric is twisted and which is used to clean out the stem of a tobacco pipe or other narrow tube. It can be also used for arts and crafts

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