Slept restlessly in animal skins (5)
I believe the answer is:
pelts
'animal skins' is the definition.
(pelt is a kind of animal skin)
'slept restlessly' is the wordplay.
'restlessly' indicates an anagram (I've seen this in other clues).
'slept' with letters rearranged gives 'PELTS'.
'in' is the link.
(Other definitions for pelts that I've seen before include "Animal skins with fur still on" , "Animal furs" , "Animal hides" , "Throws missiles for animal skins" .)