Shuteye (5)
I believe the answer is:
sleep
'shuteye' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for sleep that I've seen before include "Slumber" , "Drop off" , "''... that knits up the ravell'd sleeve of care'' (Macbeth)" , "Doze, nap" , "Wayne _; former Royal Ballet principal dancer" .)