Third-person singular simple present indicative form of scour

(veterinary medicine) Diarrhea in horses and cattle caused by intestinal infection. / (dated) A place where wool was washed and cleaned.

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.)

present participle of scour

simple past tense and past participle of scour

(transitive) To clean, polish, or wash (something) by rubbing and scrubbing it vigorously, frequently with an abrasive or cleaning agent.

The removal of sediment caused by swiftly moving water. / A place scoured out by running water, as in the bed of a stream below a waterfall.

(transitive) To search an area thoroughly. / (transitive, intransitive) To run with speed; to scurry. / (transitive, intransitive) To move swiftly over; to brush along.

plural of scouring

plural of ice scour