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Jyutping ngaa4 wong4
Pinyin yá huáng

Definitions (Wiktionary)
  1. noun, Cantonese, Hakka, Mandarin, Suzhou, Wu, dialectal
    dental plaque
    (syn.) 牙𥀃, 牙黃, 牙花子, 牙乾, 牙齒惡, 喙齒𣻸, 牙惡, 牙齒屎, 喙齒屎, 牙齒垽, 牙花兒, 牙茄, 牙齒𣻸, 牙子垽, 牙𨣉, 牙滯, 牙齪, 牙滯子, 牙齒垢, 牙子惡, 齒𣻸, 牙㿸, 牙屎㿸, 牙齦, 牙屎, 牙坩, 牙垢, 齒屎, 牙鏽, 牙齒垠, 牙根屎, 牙垠
Examples (粵典–words.hk)
  1. Cantonese
    你棚牙黄晒。
    你棚牙黃晒。
    nei5 paang4 ngaa4 wong4 saai3.
    • Your teeth turned yellow.