Wild animal's trail (5)
I believe the answer is:
spoor
'wild animal's trail' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for spoor that I've seen before include "Animal's track or scent" , "Track of wild animal" , "Animal track, trail" , "24 [TRAIL]" , "Beast's trail" .)