Stays out all night?
I believe the answer is:
camps
'stays out all night?' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for camps that I've seen before include "Places where troops are lodged and trained" , "Pitches tents" , "Sleeps in a tent" , "Lives in makeshift shelters" , "Temporary living quarters for soldiers" .)