兄

长兄

zhǎng xiōng

eldest brother

阿兄

ā xiōng

elder brother

双生兄弟

shuāng shēng xiōng dì

twin brothers

难兄难弟

nán xiōng nán dì

lit. hard to differentiate between elder and younger brother (idiom)

难兄难弟

nàn xiōng nàn dì

brothers in hardship (idiom)

雷曼兄弟

léi màn xiōng dì

Lehman Brothers, investment bank

仁兄

rén xiōng

(honorific written address) My dear friend

令兄

lìng xiōng

Your esteemed older brother (honorific)

兄妹

xiōng mèi

brother(s) and sister(s)

兄嫂

xiōng sǎo

elder brother and his wife

兄弟

xiōng dì

brothers

兄弟姐妹

xiōng dì jiě mèi

brothers and sisters