Butter mountain? The reverse! (4)
I believe the answer is:
ibex
This clue could be a double definition.
'butter mountain?' is the first definition.
Although both the answer and definition are singular nouns, I cannot understand how they can define each other.
'the reverse' is the second definition.
Although both the answer and definition are singular nouns, I can't see how one could define the other.
Can you help me to learn more?
(Other definitions for ibex that I've seen before include "one seldom puts a foot wrong" , "Wind goat of North Africa" , "Wild mountain goat" , "one used to high living" , "Large-horned mountain goat" .)