Symbol of love (4)
'symbol of love' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for eros that I've seen before include "Group of instincts" , "God of love; life instinct (Freud)" , "Rose for the love-god" , "Cupid, son of Aphrodite" , "Goddess" .)
(Other definitions for cupid that I've seen before include "Boy with wings, bow, arrow" , "naked boy" , "Armed boy" , "armed youth" , "Roman god of love, child archer" .)