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Jyutping tai6
Pinyin

Definitions (CC-CANTO)
  1. wife of a younger brother/younger sister

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Jyutping tai5
Pinyin

Definitions (CC-CANTO)
  1. wife of a younger brother/younger sister
Definitions (Unihan)
  1. younger sister, sister-in-law
  2. Cangjie Input
    VCNH

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Jyutping dai6
Pinyin

Definitions (CC-CEDICT)
  1. wife of a younger brother
Definitions (CC-CANTO)
  1. wife of a younger brother/younger sister
Definitions (Wiktionary)
  1. character, obsolete
    younger of two women married to a man; (in general) concubine of a man
  2. character
    Used in the given name of a girl to symbolize the hope that she will have a younger brother.
  3. character, obsolete
    wife of husband's younger brother
  4. character
    a surname
  5. character, obsolete
    mother's younger sister
  6. character, obsolete
    younger sister