To clean, polish, or wash something by rubbing and scrubbing it vigorously, frequently with an abrasive or cleaning agent.
He scoured the burnt food from the pan.
To remove debris and dirt by purging; to sweep along or off (by a current of water).
To clear the digestive tract by administering medication that induces defecation or vomiting; to purge.
to scour a horse
To (cause livestock to) suffer from diarrhoea or dysentery.
If a lamb is scouring, do not delay treatment.
To cleanse (without rubbing).
To search an area thoroughly.
They scoured the scene of the crime for clues.
To run with speed; to scurry.
To move swiftly over; to brush along.
The act of cleaning a surface by rubbing it with a brush, soap and water.
Diarrhea. (Now used only of livestock, though also sometimes used of humans into the 1600s.)