けいし 兄姉 LinksSentence search for 兄姉Sentence search for けいしSentence search for きょうだいKanji details for 兄 and 姉Edit in JMdict Noun1. brother and sisterOther forms兄姉 【きょうだい】Notesきょうだい: Irregular kana usage. Discussions Log in to talk about this word.