姉し妹まい校こうMeaningsNoun1. sister schoolKanji used姉older sister妹younger sister校schoolComposed of姉し妹まいsistersNoun校こうschool; proofreading; proofSuffixExamples1彼かれらの学がっ校こうと私わたしたちの学がっ校こうは姉し妹まい校こうです。Their school and ours are sister schools.