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Jyutping gip1 mou2
Pinyin jiē mào

Definitions (Wiktionary)
  1. noun, Cantonese
    cap, especially a baseball cap
    (syn.) 波帽, 鴨舌帽, 吐舌仔帽, 鸭舌帽, 棒球帽, 太阳帽, 太陽帽
Definitions (Kaifangcidian)
  1. 鴨舌帽 – 鸭舌帽

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Jyutping gep1 mou6
Pinyin jí mào

Definitions (CC-CANTO)
  1. tweed caps