scrubber

(skrubər)

noun

anything that scrubs or is used for scrubbing: specif., an apparatus that cleans the gases passing through a smokestack of a coal-burning power plant

Origin: scrub + -er

See scrubber in American Heritage Dictionary 4

noun
One that scrubs, especially:
a. One who cleans floors, for example, by scrubbing.
b. A brush, appliance, or abrasive that is used in cleaning.
c. An apparatus that is used for removing impurities from a gas.

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