金剛砂 [－刚－]

Jyutping gam1 gong1 saa1
Pinyin jīn gāng shā

Definitions (CC-CEDICT)
  1. carborundum
  2. emery
Definitions (Wiktionary)
  1. noun
    emery
Definitions (Kaifangcidian)
  1. （沒有對應漢語詞彙）