"scour : (transitive) To clean, polish, or wash something by rubbing and scrubbing it vigorously,..."

“scour : (transitive) To clean, polish, or wash something by rubbing and scrubbing it vigorously, frequently with an abrasive or cleaning agent.
(transitive) To remove debris and dirt by purging; to sweep along or off (by a current of water).
(transitive, veterinary medicine) To clear the digestive tract by administering medication that induces defecation or vomiting; to purge.
(transitive, intransitive, veterinary medicine) To (cause livestock to) suffer from diarrhoea or dysentery.
(transitive, obsolete) To cleanse (without rubbing).”

- https://en.wiktionary.org/wiki/scour#English

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