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Jyutping tong4 dai2 sek6
Pinyin táng dǐ shí

Definitions (粵典–words.hk)
  1. 名詞
    池塘​底​嘅​石​仔
    small stone in the bottom of a pool
  2. 名詞
    比喻​無錢​要​揾​人​借​錢​先出​現​嘅​人
    fig. people who only appear when they lack money and have to borrow from the others