Ox or fox (6)
I believe the answer is:
animal
'ox or fox' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for animal that I've seen before include "Animate being" , "Any organism capable of voluntary movement" , "Beastly" , "I''m Alan (anag) - a wild, crazy person" , "Mammal" .)