肛門括約筋 (hiragana こうもんかつやくきん, romaji kōmon katsuyakukin, historical hiragana こうもんくわつやくきん)
肛門括約筋 • (hangmun gwaryakgeun) (hangeul 항문 괄약근)
肛門 (kōmon, “anus”) + 括約筋 (katsuyakukin, “sphincter”)