What does the cryptic crossword clue "Tinned pickle to open? (3,2,5)" mean?

The definition is "Tinned pickle to open?". The wordplay uses a cryptic definition. Cryptic definition The answer is CAN OF WORMS.

Tinned pickle to open? (3,2,5)

Times Cryptic #28558 | 13 Down | 2023-03-23 flower