Wart-covered creature (4)
I believe the answer is:
toad
'wart-covered creature' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for toad that I've seen before include "Warty amphibian" , "driver of reckless repute" , "Contemptible person" , "Common amphibian" , "Hateful person; animal" .)