SCRUBBER
scrubber
(noun) a purifier that removes impurities from a gas
scrubber
(noun) a worker who uses a scrub brush to clean a surface (usually a floor or deck)
Source: WordNet® 3.1
Etymology
Noun
scrubber (plural scrubbers)
A person or appliance that cleans floors or similar by scrubbing.
A device that removes impurities from gases.
(historical) A machine for washing leather after the tanpit.
(AU) An animal that breaks away from the herd.
(British, slang) A prostitute or a slovenly woman.
(GUI, audio, video) A horizontal bar allowing the user to set the playback position.
Source: Wiktionary
Scrub"ber, n.
1. One who, or that which, scrubs; esp., a brush used in scrubbing.
2. (Gas Manuf.)
Definition: A gas washer. See under Gas.
Source: Webster’s Unabridged Dictionary 1913 Edition