Short time out? (3)
I believe the answer is:
nap
'short time out?' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for nap that I've seen before include "Take forty winks" , "Short sleep, card-game" , "Pile of material" , "raised bits of velvet" , "Card game - quick sleep" .)