Warthog feature (4)
I believe the answer is:
tusk
'warthog feature' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for tusk that I've seen before include "Walrus horn" , "Protruding ivory, of elephant say" , "Large tooth" , "What's the point of a Jumbo that's hard" , "Elephant's dentine" .)