茶垢 Traditional form: 茶垢 Pinyin (reading): chágòu Definitions: tea stain (on the inside of a tea pot, tea cup etc) Characters: 茶 - tea; tea leaves; tea plant 垢 - dirt, filth, stains; dirty; disgraceful Traditional characters: 茶 - tea; tea leaves; tea plant 垢 - dirt, filth, stains; dirty; disgraceful