Objects to being found in nights (6)
I believe the answer is:
things
'objects' is the definition.
(I know this)
'found in nights' is the wordplay.
'found in' indicates anagramming the letters.
'nights' with letters rearranged gives 'THINGS'.
'to being' acts as a link.
(Other definitions for things that I've seen before include "Items" , "Stuff" , "Objects" .)