"Sleep that knits up the ravelled ... of care" (Macbeth) (6)
![Ross](/clue/static/ross-mug.min.png)
I believe the answer is:
sleeve
(Other definitions for sleeve that I've seen before include "Cover for arm and vinyl record" , "with something to hide?" , "It covers the arm" , "It's attached to the armhole" , "Covering for arm or record" .)