What does the cryptic crossword clue "Stop and search twice: a set-up! (5)" mean?

The definition is "Stop". The wordplay uses a hidden word. Hidden in "stop and search twiCE: A SEt-up!" The answer is CEASE.

Stop and search twice: a set-up! (5)

Guardian Cryptic #29127 | 12 Across | 2023-07-20 flower