Meaning ofcasehardenedin English

Verb

1. having a hardened outer layer (physically or emotionally)
   The worker's hands were casehardened from years of manual labor.
2. to make insensitive (emotionally); toughen by experience
   The social worker's heart was casehardened after dealing with numerous traumatic cases.
3. hardened by carbon infusion; strengthened surface
   The steel tool was casehardened to increase its durability.