肛こう門もん鏡きょうMeanings1nounanoscope; proctoscope; rectal speculummedicineMedical instrument used for visual examination of the anal canal and lower rectum.医い師しは肛こう門もん鏡きょうを使つかって直ちょく腸ちょうの検けん査さを行おこなった。The doctor examined the rectum using an anoscope.