Having the outside hardened, as iron tools, etc.

Figuratively, not sensitive; having no sense of shame; indifferent to reproof or dishonor.

adjective. Having the surface hardened, as iron tools.

adjective. Hardened against, or insusceptible to, good influences; rendered callous by persistence in wrongdoing or resistance of good influences; -- said of persons.

verb. Simple past tense and past participle of caseharden.

adjective. used of persons; emotionally hardened

"Of the lot the upper end gun is the Woodcock, color casehardened, single selective trigger, ejectors on the 12 & 20, screw in choketubes."

hard  

advfirewall  blandest  cockeyed  ex-chief  extranet  

caseharden