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Jyutping leon2 tau4 zi2
Pinyin luǎn tóu zi

Definitions (Wiktionary)
  1. noun, Wu
    glans penis
    (syn.) 卵頭, 𡳞頭, 卵頭子, 𡳞𦉎, 雞頭, 龜頭, 㞗頭子