Noviro
妹
HSK1
Simplified 妹
Traditional 妹
Pinyin mèi
Definition younger sister
妹，等我一下
Mèi, děng wǒ yíxià
Hey sis, wait for me a second
我妹在楼下等我
Wǒ mèi zài lóuxià děng wǒ
My younger sister is waiting for me downstairs
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妹妹
mèi mei
younger sister; young woman
HSK1
姐妹
jiě mèi
sisters; siblings; sister (school, city etc.)
HSK4
兄妹
xiōng mèi
brother(s) and sister(s)
表妹
biǎo mèi
younger female cousin via female line
姊妹
zǐ mèi
(older and younger) sisters; sister (school, city etc.)
妹子
mèi zi
(dialect) younger sister; girl
堂妹
táng mèi
younger female patrilineal cousin
妹夫
mèi fu
younger sister's husband