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Jyutping daai6 daai6 baak3 ji4
Pinyin dà dà bó ér

Definitions (Wiktionary)
  1. noun, Beijing
    brother-in-law (husband's elder brother)
    (syn.) 大伯子, 大伯爺, eldest brother, 大伯 eldest-brother, 伯爺, 大伯, 大伯子 non-face-to-face, 阿伯, 大伯仔 GT, 阿伯子, 大大伯兒, 伯仔, 大伯佬, 伯伯, 大伯哥, 阿伯子哥 non-face-to-face, 大郎伯, 伯子, 大伯 non-face-to-face