鎖さ肛こうさこうMeanings1nounimperforate anus; anal atresiamedicineMedical term for a congenital condition where the anal opening is absent or blocked.鎖さ肛こうは新しん生せい児じ期きに発はっ見けんされることが多おおい先せん天てん異い常じょうです。Imperforate anus is a congenital anomaly often detected in the newborn period.