Feisty Eve rang John Steed? (7)

I believe the answer is:

avenger

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'john steed?' is the definition.
Although both the answer and definition are singular nouns, I can't see how one could define the other.

'feisty eve rang' is the wordplay.
'eve rang' anagrams to 'AVENGER'.
But, I am unsure how this is indicated.

Can you help me to learn more?

(Other definitions for avenger that I've seen before include "One who seeks or obtains satisfaction for injury" , ""Count of Monte Cristo," for example" , "one evening?" , "One exacts retribution" , "Bringer of retribution" .)

I've seen this clue in The Sun.

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