What does the cryptic crossword clue "Beauty rubbishing old prunes (9)" mean?

The definition is "Beauty". The wordplay uses an anagram. anagram of OLD + PRUNES = SPLENDOUR; definition: "Beauty" The answer is Splendour.

Beauty rubbishing old prunes (9)

Telegraph Prize Cryptic #3058 | 23 Across | 2020-05-31 flower