追龍 [－龙]

Jyutping zeoi1 lung4
Pinyin zhuī lóng

Definitions (CC-CANTO)
  1. to take drugs
Definitions (粵典–words.hk)
  1. 動詞、黃賭毒
    本身​指用​錫紙​加熱​海洛英​嚟​吸食​；​後​來​指​吸食​任何​毒品
    to use heroin; to use drugs; literally: to chase dragon
Definitions (Wiktionary)
  1. verb, literally
    to chase the dragon
  2. verb, Cantonese
    to inhale the vapour from the heated solution of a narcotic; to chase the dragon