Cupid (4)
'cupid' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for eros that I've seen before include "Asteroid - Greek god of love" , "Greek god of sexual love, Cupid to the Romans" , "Cupid, to the Greeks" , "Rose for the love-god" , "asteroid four hundred and thirty three" .)
'cupid' is the definition.
(synonyms)
This is the entire clue.