What does the cryptic crossword clue "Code of silence represented at Rome (6)" mean?

The definition is "Code of silence". The wordplay uses an anagram. anagram of AT + ROME = OMERTA; definition: "Code of silence" The answer is OMERTA.

Code of silence represented at Rome (6)

Daily Mail Cryptic #17544 | 7 Down | 2025-01-30 flower