What does the cryptic crossword clue "Leg got tangled in fastener (6)" mean?

The definition is "fastener". The wordplay uses an anagram. anagram of LEG + GOT = TOGGLE; definition: "fastener" The answer is TOGGLE.

Leg got tangled in fastener (6)

Daily Mail Cryptic #17189 | 1 Down | 2023-09-20 flower