Anneal
Part of speech: verb
Definition: To subject to great heat, and then cool slowly for the purpose of rendering less brittle; to temper; to toughen.
Temper
Part of speech: noun
Definition: A tendency to anger or lose patience easily.State of mind.The heat treatment to which a metal or other material has been subjected; a material that has undergone a particular heat treatment.
Part of speech: verb
Definition: To moderate or control.To heat-treat a material, particularly a metal.To mix clay, plaster or mortar with water to obtain the proper consistency
Example sentence: A vigorous temper is not altogether an evil. Men who are easy as an old shoe are generally of little worth.