Crossword Genius

Circe's heart captured by enchanter one linked with Homer (5)

Ross

I believe the answer is:

marge

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'homer' is the definition.
Although both the answer and definition are singular nouns, I can't understand how they can define each other.

I don't understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for marge that I've seen before include "Butter substitute (abbr)" , "little girl?" , "Homer Simpson's wife; a spread (abbr.)" , "Butter-like spread" , "limit" .)

I've seen this clue in The Times.
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