What does the cryptic crossword clue "Yarn assimilated by many Londoners (5)" mean?

The definition is "Yarn". The wordplay uses a hidden word. Hidden in "yarn assimilated by maNY LONdoners" The answer is NYLON.

Yarn assimilated by many Londoners (5)

Times Cryptic #29102 | 23 Across | 2024-12-17 flower