What does the cryptic crossword clue "String of Pearls — part of Meyerbeer opera (4)" mean?

The definition is "String of Pearls". The wordplay uses a hidden word. Hidden in "string of pearls — part of meyerbeeR OPEra" The answer is ROPE.

String of Pearls — part of Meyerbeer opera (4)

Guardian Cryptic #29108 | 6 Down | 2023-06-28 flower