直ちょく腸ちょう肛こう門もん反はん射しゃMeaningsNoun1. rectoanal reflexKanji used直straight腸intestines肛anal門gate反be against射shootComposed of直ちょく腸ちょうrectumNoun肛こう門もんanusNoun反はん射しゃreflection; reverberation; reflex; reflexesNoun