Nick , singer-actor; author of 2009 novel The Death of Bunny Munro (4)

I believe the answer is:

cave

(Other definitions for cave that I've seen before include "Natural hollow in side of hill or cliff" , "hole" , "Hollow - warning" , "Primitive dwelling" , "Underground enclosure with surface access" .)

I've seen this clue in The Mirror.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.