What does the cryptic crossword clue "Some seen kerb-crawling around joint (4)" mean?

The definition is "Some". The wordplay uses hidden reversed. Hidden reversed in "some sEEN Kerb-crawling around joint" The answer is KNEE.

Some seen kerb-crawling around joint (4)

Independent Cryptic #11918 | 24 Across | 2024-12-20 flower