Run away to find somewhere to sleep (4)
I believe the answer is:
bunk
I believe this is a double definition.
'run away' is the first definition.
(synonyms)
'somewhere to sleep' is the second definition.
(I've seen this before)
'to find' is the link.
(Other definitions for bunk that I've seen before include "Narrow bed; nonsense" , "Ship's bed" , "Somewhere to sleep" , "(Two-tier) bed - rubbish" , "Type of bed" .)