長ちょう兄けいちょうけいFreq.FrequencyTop 50,000Meanings1nouneldest brotherRefers specifically to the oldest brother among siblings. More formal than 一番上の兄.長ちょう兄けいは医い者しゃで、次じ兄けいは弁べん護ご士しです。My eldest brother is a doctor, and my second eldest brother is a lawyer.