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Etymology
From.

Verb

 * 1)  to harden, to indurate, to inure, to toughen
 * 2)  to anneal, to temper, to harden
 * 3)  to harden, to indurate
 * 4)  to be tempered
 * 1)  to anneal, to temper, to harden
 * 2)  to harden, to indurate
 * 3)  to be tempered
 * 1)  to harden, to indurate
 * 2)  to be tempered
 * 1)  to be tempered