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Jyutping mung4 ngaan5 zai2
Pinyin méng yǎn zǎi

Definitions (粵典–words.hk)
  1. 名詞
    眼​細​嘅​年​輕​男性
    stupid boy, an foolish kid, "squint-eyed"

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Jyutping mung4 ngaan5 zai2
Pinyin méng yǎn zǐ

Definitions (CC-CANTO)
  1. a foolish kid [colloquial]