What does the cryptic crossword clue "I boo lad that's disrupted game with a top (7)" mean?

The definition is "top". The wordplay uses an anagram. anagram of I + BOO + LAD = DIABOLO; definition: "top" The answer is DIABOLO.

I boo lad that's disrupted game with a top (7)

Daily Mail Cryptic #17264 | 19 Down | 2024-01-04 flower