will give crown only if correct

Read the passage.…


THE thousand injuries of Fortunato I had borne as I best could, but when he ventured upon insult, I vowed revenge. You, who so well know the nature of my soul, will not suppose, however, that I gave utterance to a threat. AT LENGTH I would be avenged... I must not only punish, but punish with impunity.


What does the word avenged mean as it is used in this passage?