What does the cryptic crossword clue "Angler omits to move lizard (4,7)" mean?

The definition is "lizard". The wordplay uses an anagram. anagram of ANGLER + OMITS = GILAMONSTER; definition: "lizard" The answer is GILAMONSTER.

Angler omits to move lizard (4,7)

Daily Mail Cryptic #17121 | 12 Across | 2023-06-16 flower