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Jyutping biu2 daai6 zi2
Pinyin biǎo dà zǐ

Definitions (Wiktionary)
  1. noun, Hokkien, Mainland-China
    cousin (mother's sibling's or father's sister's daughter older than oneself)
    (syn.) 表阿姊, 表姐, 表阿姐, 表姐姐, 阿姊, 表大姊, 表姊姊, 表姊