First, each and everyone in widespread existence today (4,4)
I believe the answer is:
real life
'existence today' is the definition.
Although both the answer and definition are singular nouns, I don't understand how one could define the other.
'first each and everyone in widespread' is the wordplay.
'first each' becomes 'e' (1st letter of 'each').
'and' is a charade indicator (letters next to each other).
'everyone' becomes 'all' (all people).
'in' means one lot of letters goes inside another.
'widespread' becomes 'rife' (I've seen this before).
'e'+'all'='eall'
'eall' going inside 'rife' is 'REAL LIFE'.
Can you help me to learn more?
(Other definitions for real life that I've seen before include "In actuality" , "Everyday existence as opposed to fiction" .)