Is numb (anag) (6)

I believe the answer is:

nimbus

(Other definitions for nimbus that I've seen before include "Type of rain cloud" , "Large rain cloud; halo" , "Dark, rain-bearing cloud" , "A black rain cloud" , "Dirty cloud; saintly light" .)

I've seen this clue in The Guardian.

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.