What does the cryptic crossword clue "Horrified — Reichstag has tartan curtains! (6)" mean?

The definition is "Horrified". The wordplay uses a hidden word. Hidden in "horrified — reichstAG HAS Tartan curtains!" The answer is AGHAST.

Horrified — Reichstag has tartan curtains! (6)

Times Cryptic #29203 | 16 Across | 2025-04-14 flower