Basic reality in Milton to be changed (6,4)
I believe the answer is:
bottom line
'basic reality' is the definition.
Although both the answer and definition are singular nouns, I can't understand how they can define each other.
'milton to be changed' is the wordplay.
'changed' indicates an anagram.
'milton'+'to'+'be'='miltontobe'
'miltontobe' is an anagram of 'BOTTOM LINE'.
'in' acts as a link.
Can you help me to learn more?
(Other definitions for bottom line that I've seen before include "Fundamental factor" , "The basic reality of a situation" , "Essential point (for an accountant?)" , "Fundamental aspect of a situation" , "Profit or loss" .)