Wolf in ravine (5)
I believe the answer is:
gorge
This clue is a double definition.
'wolf' is the first definition.
(I know that gorge is a more specific form of the action eat)
'ravine' is the second definition.
(I know that ravine can be written as gorge)
'in' acts as a link.
(Other definitions for gorge that I've seen before include "Steep narrow valley" , "Overeat in the deep ravine" , "Steep narrow ravine" , "Eat gluttonously" , "Gobble" .)