Noun
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a place that is scoured (especially by running water)
Verb
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rinse, clean, or empty with a liquid
"flush the wound with antibiotics"
"purge the old gas tank"
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rub hard or scrub
"scour the counter tops"
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clean with hard rubbing
"She scrubbed his back"
-
examine minutely
"The police scoured the country for the fugitive"