a.

1. 有研磨作用的；有磨蚀作用的
2. 伤人感情的，恼人的

n.

1. 研磨料（如金钢砂、砂纸等）
2. 【地】磨蚀岩屑

adj.

1. (of a substance) capable of polishing or cleaning a hard surface by rubbing or grinding.
   ▸tending to rub or graze the skin.
2. harsh or insensitive in manner.

n.