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Jyutping caap3 sou1 tau4
Pinyin chā sū tóu

Definitions (Wiktionary)
  1. noun, Cantonese
    electric plug
    (syn.) 插蘇, 插銷, 蘇頭, 插樸, 插頭, 插蘇頭, 樸落
Definitions (Kaifangcidian)
  1. 插頭 – 插头
  2. 插銷 – 插销
  3. 電源插頭 – 电源插头

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Jyutping caap3 sou1 tau2
Pinyin chā sū tóu

Definitions (粵典–words.hk)
  1. 名詞
    即​係​插頭
    electric plug; see 插頭caap3 tau2