SCOUR (2)

Scour, v. i. 1. 1. To clean anything by rubbing. Shak.
2. 2. To cleanse anything.
Warm water is softer than cold, for it scoureth better. Bacon. 3. 3. To be purged freely; to have a diarrhœa.
4. 4. To run swiftly; to rove or range in pursuit or search of something; to scamper.
So four fierce coursers, starting to the race, Scour through the plain, and lengthen every pace. Dryden.