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Jyutping zi2 mou5 kau3
Pinyin zǐ mǔ kòu

Definitions (Wiktionary)
  1. noun
    snap fastener; popper
    (syn.) 噼噼仔, 鉛鈕, 搭扣, 子母扣, 壓扣, 捺子, 按扣, 夾扣, 捺紐, 喼紐 dated, 捺鈕, 公婆紐子, 則紐, 撳紐, 紐扣, 按扣兒, 捺扣, 啪紐, 抶紐, 合紐仔, 公婆扣子, 摁扣兒, 落扣, 子母扣兒, 搭紐, 鬥紐, 鬥仔, 夾紐

子母扣 [---]

Jyutping
Pinyin zǐ mǔ kòu

Definitions (CC-CEDICT)
  1. snap fastener