What does the cryptic crossword clue "Judge bar attire in a different way (9)" mean?

The definition is "Judge". The wordplay uses an anagram. anagram of BAR + ATTIRE = ARBITRATE; definition: "Judge" The answer is ARBITRATE.

Judge bar attire in a different way (9)

Daily Mail Cryptic #17144 | 15 Down | 2023-07-19 flower