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Jyutping hoi1 baau1
Pinyin kāi bāo

Definitions (Wiktionary)
  1. verb, literally
    to open up a package or bag
  2. verb, of a girl
    to lose one's virginity; to be deflowered
Examples (Tatoeba—Mandarin-English)
  1. Mandarin
    请你分开包装好吗?
    請你分開包裝好嗎?
    qǐng nǐ fēn kāi bāo zhuāng hǎo ma ?
    • Could you wrap this separately, please?
  2. Mandarin
    我在打开包装时遇到了麻烦。
    我在打開包裝時遇到了麻煩。
    wǒ zài dǎ kāi bāo zhuāng shí yù dào le má fan 。
    • I had trouble unwrapping the package.