What does the cryptic crossword clue "Constant horseplay oldies partially backed (5)" mean?

The definition is "Constant". The wordplay uses a hidden word. Hidden reversed in "constant horsepLAY OLdies partially backed" The answer is LOYAL.

Constant horseplay oldies partially backed (5)

Times Cryptic #29049 | 14 Across | 2024-10-16 flower