雜差 [杂－]

Jyutping zaap6 caai1
Pinyin zá chà

Definitions (粵典–words.hk)
  1. 名詞
    便衣警察​（​量​詞​：​個​）
    a police detective; the police

雜差 [杂－]

Jyutping zaap6 caai1
Pinyin zá chāi

Definitions (CC-CANTO)
  1. a plainclothes police officer; a criminal police; drudge work; a gofer / dogsbody running errands for others