Diarrhea.
A disease characterised by inflammation of the intestines, especially the colon (large intestine), accompanied by pus (white blood cells) in the feces, fever, pain in the abdomen, high-volume diarrhea, and possible blood in the feces.
Originally of both persons and animals, now only of animals: looseness of the bowels; diarrhoea; (countable) a bout of this ailment.