All 5 Uses

avenge
in
Oedipus the King
(Auto-generated)

CREON So 'twas surmised, but none was found to avenge His murder mid the trouble that ensued.†
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avenge = take revenge for
Right worthy the concern Of Phoebus, worthy thine too, for the dead; I also, as is meet, will lend my aid To avenge this wrong to Thebes and to the god.†
And now that I am lord, Successor to his throne, his bed, his wife, (And had he not been frustrate in the hope Of issue, common children of one womb Had forced a closer bond twixt him and me, But Fate swooped down upon him), therefore I His blood-avenger will maintain his cause As though he were my sire, and leave no stone Unturned to track the assassin or avenge The son of Labdacus, of Polydore, Of Cadmus, and Agenor first of the race.†

avenger = someone who takes revenge
And now that I am lord, Successor to his throne, his bed, his wife, (And had he not been frustrate in the hope Of issue, common children of one womb Had forced a closer bond twixt him and me, But Fate swooped down upon him), therefore I His blood-avenger will maintain his cause As though he were my sire, and leave no stone Unturned to track the assassin or avenge The son of Labdacus, of Polydore, Of Cadmus, and Agenor first of the race.†

avenge = take revenge for
Now like a sullen bull he roves Through forest brakes and upland groves, And vainly seeks to fly The doom that ever nigh Flits o'er his head, Still by the avenging Phoebus sped, The voice divine, From Earth's mid shrine.†

avenging = taking revenge

Definitions:

(1) (avenge)
take revenge for a perceived wrong
(2) (meaning too rare to warrant focus)
Avengers is also used as a proper noun to refer to fictious superheroes or naval ship names. Avenger has also been used to describe classes of weaponry.