イレウスイレウスMeanings1nounileus; intestinal obstructionmedicineMedical term for a blockage of the intestine; synonymous with 腸閉塞 (ちょうへいそく) in clinical contexts.See also: 腸閉塞術じゅつ後ごにイレウスを発はっ症しょうした。The patient developed an ileus after surgery.