clean or brighten the surface of (something) by rubbing it hard, typically with an abrasive or detergent

she scoured the cooker

I was scouring out the pans

(of livestock) suffer from diarrhoea

he went out to deal with piglets who were scouring

subject (a place, text, etc.) to a thorough search in order to locate something

David scoured each newspaper for an article on the murder