Scour (verb)

1. To clean something thoroughly, typically by scrubbing it with a brush and water.
2. To remove dirt, stains, or other impurities from something.
3. To search through something thoroughly.

Origin:

Middle english scouren, from old english scūrian, from proto-germanic *skūrianą (compare west frisian skouwe, dutch schuren, german scheuern), from proto-indo-european *(s)ker- ("to cut, split").

Examples:

1. She scoured the pots and pans.
2. He scoured the sink with steel wool.
3. The detective scoured the crime scene for clues.
4. They scoured the Internet for information.
5. We scoured the library for the book.