What may cover a rotunda (4)

I believe the answer is:

dome

(Other definitions for dome that I've seen before include "description of church roof?" , "Old cathedral" , "A stately building" , "Rounded roof with circular base" , "Crown" .)

I've seen this clue in the Universal.

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.