爐渣 [炉－]

Jyutping lou4 zaa1
Pinyin lú zhā

Definitions (CC-CEDICT)
  1. furnace slag
  2. ashes from a stove
Definitions (Wiktionary)
  1. noun
    slag; cinder (from a furnace)
  2. noun
    ash (from a stove)
Definitions (Kaifangcidian)
  1. （沒有對應漢語詞彙）