What does the cryptic crossword clue "Plunders shelves where solution half-hidden (8)" mean?

The wordplay uses a container (one word inside another). ANS (synonym="ANS") in RACKS (synonym="RACKS") = RANSACKS The answer is RANSACKS.

Plunders shelves where solution half-hidden (8)

Guardian Cryptic #29210 | 8 Across | 2023-10-25 flower