What does the cryptic crossword clue "Get rid of unwanted drug that’s been released (4,3)" mean?

The definition is "Get". The wordplay uses a hidden word. WEED (synonym="cannabis") + OUT (synonym="released") = WEEDOUT The answer is WEEDOUT.

Get rid of unwanted drug that’s been released (4,3)

Guardian Cryptic #29509 | 5 Across | 2024-10-09 flower