妹妹
/-{-{mèimei}-}-/, /-{-{měiméi}-}-/, /mei⁴⁴ mei⁰/, /me²² me⁴⁴/, /muːi̯²²⁻²¹ muːi̯²²⁻³⁵/, /muːi̯²² muːi̯²²/, /meeimei/, /mey.mei/, /mui6-4 mui6-2 / mui6 mui6/, /mui6-4 mui6-2 / mui6 mui6/, /mèime̊i/, /měiméi/、/ㄇㄟˇ ㄇㄟˊ/、/ㄇㄟˋ ˙ㄇㄟ/
noun
同父母、同族、同輩中年齡比自己小的女性
  1. 妹
  2. 妹さん