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Jyutping ci3 so2 baan2
Pinyin cè suǒ bǎn

Definitions (粵典–words.hk)
  1. 名詞
    座​廁上​用​嚟​坐​嘅​板​,​俗稱​屎​塔蓋​(​量​詞​:​塊​)
    toilet seat
    • 唔好企喺廁板上面,好危險!
      唔好企喺厕板上面,好危险!
      m4 hou2 kei5 hai2 ci3 baan2 soeng6 min6, hou2 ngai4 him2!
      Don't stand on the toilet seat, it is very dangerous!
  2. 名詞
    香港​特區護​照​嘅​俗​稱
    a common name of the Hong Kong SAR passport
  3. 參看
    廁板
Definitions (Wiktionary)
  1. noun, Hong-Kong
    toilet seat (Classifier: 個/个; 塊/块)
  2. noun, Cantonese, Hong-Kong, slang
    passport of Hong Kong (Classifier: 本)
Definitions (Kaifangcidian)
  1. 馬桶蓋 – 马桶盖

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Jyutping ci3 so2 baan2
Pinyin cě4suo bǎn

Definitions (CC-CANTO)
  1. toilet seat [written and colloquial]