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Jyutping sau3 hau2 bui1
Pinyin shù kǒu bēi

Definitions (Wiktionary)
  1. noun
    glass or mug for mouth-rinsing or tooth-cleaning; tooth glass or mug
    (syn.) 嘓嘴杯, 水口杯, 齒管, 齒觳, 齿觳仔, 啯口杯, 齿杯, 啯嘴杯, 牙刷杯, 盪口杯, 荡口杯, 齒杯, 𠺘口盅, 齿管, 齒觳仔, 齿觳, 牙缸, 嘓口杯