What does the cryptic crossword clue "Caterer sighs after breaking till (4,8)" mean?

The definition is "till". The wordplay uses an anagram. anagram of CATERER + SIGHS = CASHREGISTER; definition: "till" The answer is CASHREGISTER.

Caterer sighs after breaking till (4,8)

Daily Mail Cryptic #17162 | 1 Across | 2023-08-14 flower