ulcer

ul|cer /'ʌlsər/ (ulcers)
[N-COUNT]
An ulcer is a sore area on the outside or inside of your body which is very painful and may bleed or produce an unpleasant poisonous substance.
...stomach ulcers.pep|tic ul|cer /p'eptɪk 'ʌlsər/ (peptic ulcers)
[N-COUNT]
A peptic ulcer is an ulcer that occurs in the digestive system.

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