Body part: limb almost eaten by wild animal (6)
I believe the answer is:
larynx
'body part' is the definition.
(larynx is a kind of body part)
'limb almost eaten by wild animal' is the wordplay.
'limb' becomes 'arm' (arm is a kind of limb).
'almost' means to remove the last letter (most of the word but not all of it).
'eaten by' is an insertion indicator.
'wild animal' becomes 'lynx' (type of wild cat).
'arm' with its last letter removed is 'ar'.
'ar' put into 'lynx' is 'LARYNX'.
(Other definitions for larynx that I've seen before include "Human voice box" , "part of pipe" , "it's essential to speak!" , "Source of squeaks" , "The formal voice-box" .)