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older brother; elder brother
brother (as older-brother figure in friendly and or work relationship)
young man; buddy; fella; laddie
兄さんに相談してみた。
I tried consulting my older brother.
隣の兄さんが荷物を運んでくれた。
The young man next door carried the luggage for me.
兄さんのおかげで問題が解決できた。
Thanks to my older brother, the problem was solved.