打黑 [－－]

Jyutping daa2 hak1
Pinyin dǎ hēi

Definitions (CC-CEDICT)
  1. to crack down on illegal activities; to fight organized crime
Definitions (Wiktionary)
  1. verb, verb-object
    to combat underworld gangs
Definitions (兩岸三地生活差異詞語彙編—Two Shores Three Places)
  1. 法律與犯罪：臺
    掃黑
  2. 法律與犯罪：陸
    打黑