What does the cryptic crossword clue "Lethal big waves in pool (9)" mean?

The definition is "pool". The wordplay uses an anagram. anagram of LETHAL + BIG = EIGHTBALL; definition: "pool" The answer is EIGHTBALL.

Lethal big waves in pool (9)

Independent Cryptic #12108 | 3 Down | 2025-07-30 flower