Crossword Genius

Removes outer layer, returning to rest (5)

Ross

I believe the answer is:

sleep

I'm a little stuck... Click here to teach me more about this clue!

'to rest' is the definition.
(sleeping is a kind of resting)

I don't understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for sleep that I've seen before include "Wayne _; former Royal Ballet principal dancer" , "Produced (egg)" , "Natural state of unconscious rest" , "Drop off" , "Slumber" .)

I've seen this clue in The Daily Express.
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.