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Jyutping zaau2 baa3 zai2
Pinyin zhǎo bà zǎi

Definitions (Wiktionary)
  1. noun, Taiwanese-Hokkien
    backscratcher (made of bone, bamboo, wood, etc.)
  2. noun, Taiwanese-Hokkien
    informant; informer; spy
    (syn.) 报马仔, 報馬仔, 報馬, 报马