What does the cryptic crossword clue "Rows of small picks (6)" mean?

The definition is "Rows". The wordplay uses a charade (building blocks). S (synonym="small") + CULLS (synonym="picks") = SCULLS The answer is SCULLS.

Rows of small picks (6)

Independent Cryptic #11856 | 12 Across | 2024-10-09 flower