What does the cryptic crossword clue "Animal poison, absolutely not unknown, Medici misused (9)" mean?

The wordplay uses an anagram. anagram of VER (synonym="VER") + MEDICI (synonym="MEDICI") = VERMICIDE The answer is VERMICIDE.

Animal poison, absolutely not unknown, Medici misused (9)

Guardian Cryptic #29493 | 6 Down | 2024-09-20 flower