What does the cryptic crossword clue "Horrifying thing not having capital for nurse (5)" mean?

The definition is "nurse". The wordplay uses a deletion. CARER (deletion) = CARER; definition: "nurse" The answer is CARER.

Horrifying thing not having capital for nurse (5)

Guardian Cryptic #29426 | 16 Across | 2024-07-04 flower