Crossword Genius

Obsessive fiddler died for love (4)

Ross

I believe the answer is:

nerd

I'm a little stuck... Click here to teach me more about this clue!

'love' is the definition.
The definition and answer can be both people as well as being singular nouns.
Maybe you can see an association between them that I can't see?

I don't understand the remainder of the clue.

Can you help me to learn more?

(Other definitions for nerd that I've seen before include "Irritating person (slang)" , "Obsessive," , "In slang, a foolish or uninteresting person" , "Socially inept but knowledgeable person" , "Boring person" .)

I've seen this clue in The Guardian.
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