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ulcer (plural ulcers)
- (pathology) An open sore of the skin, eyes or mucous membrane, often caused by an initial abrasion and generally maintained by an inflammation and/or an infection.
- (pathology) peptic ulcer
- (figuratively) Anything that festers and corrupts like an open sore; a vice in character.
peptic ulcer — see peptic ulcer
ulcer n (plural ulcere)