"scour" in the noun sense
a place that is scoured (especially by running water)
"scour" in the verb sense
"The police scoured the country for the fugitive"
2. scrub, scour
clean with hard rubbing
"She scrubbed his back"
3. scour, abrade
rub hard or scrub
"scour the counter tops"
4. flush, scour, purge
rinse, clean, or empty with a liquid
"flush the wound with antibiotics"
"purge the old gas tank"
Source: WordNet® (An amazing lexical database of English)
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