Sentence:  Gun set the captain 's fifth of Hiram Walker inside the safe before he reported to Lt. Killpath , though he knew that Killpath 's <WSD>ulcer</WSD> prevented him from making any untoward incursion on Herman Wolff 's gift . 
Meaning of the word marked with <WSD> tags:  a circumscribed inflammatory and often suppurating lesion on the skin or an internal mucous surface resulting in necrosis of tissue