case-hardened

English

Adjective

case-hardened

  1. (metallurgy) Of metal: harder at its surface, due to a case hardening process.
  2. Hardened by experience.
    • 1964 July, “The mythology of monorails”, in Modern Railways, page 57:
      Even a case-hardened monorailist must blench at the thought of the storm such a proposition would create.

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