Crossword Genius

Love hurting after rejection (4)

Ross

I believe the answer is:

eros

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'love' is the definition.
(Greek god of love)

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

Can you help me to learn more?

(Other definitions for eros that I've seen before include "Famous statue in Piccadilly, London" , "asteroid four hundred and thirty three" , "Sore about love god" , "Winged archer" , "very centre of London?" .)

I've seen this clue in The Times.
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