茶垢 [－－]

Jyutping caa4 gau3
Pinyin chá gòu

Definitions (Wiktionary)
  1. noun, Hokkien, Mandarin, Min-Bei, Quanzhou, Xiamen
    yellow-brown substance on teaware (usually after long use)
    (syn.) 茶滓, 茶卤, 茶葺, 茶滷

茶垢 [－－]

Jyutping
Pinyin chá gòu

Definitions (CC-CEDICT)
  1. tea stain (on the inside of a tea pot, tea cup etc)