What does the cryptic crossword clue "Boast having attained new leading position (5)" mean?

The definition is "Boast". The wordplay uses a charade (building blocks). CROW (synonym="boast") + N (synonym="new") = CROWN The answer is CROWN.

Boast having attained new leading position (5)

Independent Cryptic #12050 | 28 Across | 2025-05-23 flower