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  1. ulcer

    • IPA[ˈəlsər]

    美式

    • n.
      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.;a moral blemish or corrupting influence
    • noun: ulcer, plural noun: ulcers

    • 釋義
    • n.
      名詞
    • 1. 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.
    • 2. a moral blemish or corrupting influence:

      he's a con man with an incurable ulcer called gambling

  2. 知識+