ulcer

US /ˈʌl.sɚ/
UK /ˈʌl.sɚ/
"ulcer" picture
1.

溃疡

an open sore on an external or internal surface of the body, caused by a break in the skin or mucous membrane that fails to heal

:
The doctor diagnosed him with a stomach ulcer.
医生诊断他患有胃溃疡
She had a painful mouth ulcer that made eating difficult.
她有一个痛苦的口腔溃疡,使进食困难。