What does the cryptic crossword clue "Cupid has sore back? (4)" mean?

The definition is "Cupid". The wordplay uses an anagram. anagram of SORE = EROS; definition: "Cupid" The answer is EROS.

Cupid has sore back? (4)

Daily Mail Cryptic #17281 | 24 Across | 2024-01-29 flower