牙缸 [－－]

Jyutping ngaa4 gong1
Pinyin yá gāng

Definitions (Wiktionary)
  1. noun
    mug for mouth-rinsing or tooth-cleaning; tooth mug
    (syn.) 水口杯, 齒管, 齒觳, 齿觳仔, 齿杯, 齒杯, 𠺘口盅, 齿管, 漱口杯, 齒觳仔, 齿觳, 牙罐