noun
Honorific term for one's own or someone else's older brother. Used both to address and to refer to an older brother politely.
See also: 兄さん
お兄さんは大学生ですか。
Is your older brother a university student?
お兄さん、ちょっと手伝ってくれる？
Hey big brother, can you help me a bit?
noun
Familiar, often vocative term for a young man whose name one does not know, similar to 'buddy' or 'young man'. Used in casual, friendly address.
See also: 兄さん
そこのお兄さん、ちょっと道を教えてくれませんか。
Hey there, young man, could you tell me the way?
あのお兄さん、いつも元気だね。
That fella is always so energetic, isn't he.