What does the cryptic crossword clue "A feature of Nero’s name, or son, ‘Dicky’ (5,4)" mean?

The wordplay uses an anagram. anagram of NAME OR SON = ROMANNOSE The answer is ROMANNOSE.

A feature of Nero’s name, or son, ‘Dicky’ (5,4)

Guardian Cryptic #29598 | 4 Down | 2025-01-22 flower