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Jyutping faan1 gan1 dau2
Pinyin fān jīn dǒu

Definitions (CC-CEDICT)
  1. to tumble
  2. to turn a somersault
Definitions (Wiktionary)
  1. verb, figuratively, regional
    to suffer a failure or setback
    • 對於革命我們開始也沒有經驗,翻過斤斗,取得了經驗,然後才有全國的勝利。
      对于革命我们开始也没有经验,翻过斤斗,取得了经验,然后才有全国的胜利。
      duì yú gé mìng wǒ men kāi shǐ yě méi yǒu jīng yàn , fān guò jīn dǒu , qǔ dé le jīng yàn , rán hòu cái yǒu quán guó de shèng lì .
      Neither had we any experience in revolution when we first started, and it was only after we had taken a number of tumbles and acquired experience that we won nation-wide victory.
  2. verb, regional
    to somersault
  3. verb, figuratively, regional
    to engage in speculation