hardcase

/ˈhɑrdˌkeɪs/
noun
  1. A tough, stubborn, or difficult person, especially one who is resistant to change or persuasion.
    • The coach was known as a hardcase who never let players skip practice.
    • My grandfather is a real hardcase when it comes to trying new technology.
    • Even the teacher found it hard to deal with the hardcase in the back row.
  2. A rigid protective container, typically made of plastic or metal, used for carrying or storing valuable or fragile items.
    • He bought a hardcase for his laptop to protect it from bumps and drops.
    • She packed her camera gear in a hardcase to keep it safe during the trip.
    • The violin was stored in a black hardcase with foam padding inside.