What does the cryptic crossword clue "… writer’s block beginning to depress (6)" mean?

The definition is "d". The wordplay uses a charade (building blocks). DAM (synonym="block") + PEN (synonym="writer") = DAMPEN The answer is DAMPEN.

… writer’s block beginning to depress (6)

Guardian Cryptic #29682 | 15 Across | 2025-04-30 flower