What does the cryptic crossword clue "A trifle disintegrating in thong (7)" mean?

The definition is "A trifle". The wordplay uses an anagram. anagram of IN + THONG = NOTHING; definition: "A trifle" The answer is NOTHING.

A trifle disintegrating in thong (7)

Independent Cryptic #12021 | 20 Down | 2025-04-19 flower