African beast (5)
I believe the answer is:
rhino
'african beast' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for rhino that I've seen before include "The necessary" , "Large horned mammal" , "endangered creature" , "Large animal (abbr) - money (slang)" , "One with a very thick skin (abbr)" .)