泥鴨 [－鸭]

Jyutping nai4 aap2
Pinyin ní yā

Definitions (CC-CANTO)
  1. (metaphor) saying someone is very dirty
Definitions (粵典–words.hk)
  1. 名詞
    沾滿​泥沙​嘅​汽​車
    dirty and muddy car