茶滓 [－－]

Jyutping caa4 zi2
Pinyin chá zǐ

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