Film wild animal (6)
I believe the answer is:
lamina
'film' is the definition.
(thesaurus)
'wild animal' is the wordplay.
'wild' indicates an anagram.
'animal' is an anagram of 'LAMINA'.
(Other definitions for lamina that I've seen before include "Thin plate or layer" , "Flat plate" , "Thin plate or scale" .)