What does the cryptic crossword clue "Dwindling workplace doing this to make something cool (11)" mean?

The wordplay uses a deletion. DROPPING (synonym="DROPPING") + OFF (synonym="OFF") = DROPPINGOFF The answer is DROPPINGOFF.

Dwindling workplace doing this to make something cool (11)

Independent Cryptic #11902 | 12 Down | 2024-12-02 flower