過江龍 [过－龙]

Jyutping gwo3 gong1 lung4
Pinyin guò jiāng lóng

Definitions (CC-CANTO)
  1. a booster cable; a jumper cable; someone or something from outside which has a profound effect on local affairs
Definitions (粵典–words.hk)
  1. 名詞
    一種​電線​，​兩邊​都​有​鱷​魚夾​，​可以​係​架車​撻​唔​著​嘅​時​候​，​借​其他​車​嘅​電​嚟​撻​車
    jumper cables; literally: river-crossing dragons
  2. 名詞
    喺​其他​地方​嚟​嘅​有​勢​力​人士
    someone superior or powerful who comes from the outside who has an impact on local affairs
Definitions (Wiktionary)
  1. noun, Xiamen, Zhangzhou-Hokkien
    water spinach grown in paddy fields and ponds
    (syn.) 水蕹菜
  2. noun, Cantonese
    jump-starter; jumper cable (Classifier: 條／条)
  3. noun, Cantonese
    talents or enterprises from abroad (Classifier: 條／条)