ㄌㄠˇlǎoㄒㄩㄥxiōng

  1. 稱謂➊ ​ 兄長自稱晉書··》:老兄。」➋ ​ 朋友相稱敬辭·歐陽修〉:老兄如此?」西遊記·第一》:老兄便。」

'old chap' (form of address between male friends)​
camarade, vieux frère
Alter Freund ( wört. älterer Bruder )​ (S, vulg)​