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Jyutping hoi1 seoi2 hau4
Pinyin kāi shuǐ hóu

Definitions (粵典–words.hk)
  1. 動詞
    提供​資金
    to finance
  2. 動詞
    去​小便
    to urinate; literally: to open the tap
Definitions (Kaifangcidian)
  1. 開水龍頭 – 开水龙头

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Jyutping hoi1 seoi2 hau4
Pinyin kāi1shui hóu

Definitions (CC-CANTO)
  1. literally: to open the tap; to cry; credit relaxation [colloquial]