|pathol an ulcer of the mucous membrane lining those parts of the alimentary tract exposed to digestive juices. It can occur in the oesophagus, the stomach, the duodenum, the jejunum, or in parts of the ileum|
|a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes.|
|an extraordinary or unusual thing, person, or event; an exceptional example or instance.|
peptic ulcer n.
An ulcer of the upper digestive tract, usually in the stomach or duodenum, where the mucous membrane is exposed to gastric secretions.