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Jyutping nou5 doi6 gwaa1
Pinyin nǎo dai guā

Definitions (Wiktionary)
  1. noun, colloquial
    head (body part)
  2. noun, colloquial, figuratively
    brain; brains
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)