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Jyutping gun3 tau2 fo3
Pinyin guàn tou huò

Definitions (粵典–words.hk)
  1. 名詞、俚語
    處​男​或者​處女
    a virgin
  2. 近義詞
    青頭仔

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Jyutping gun3 tau2 fo3
Pinyin guàn4tou huò

Definitions (CC-CANTO)
  1. literally: canned goods; a virgin [colloquial]