Where, in the beginning, everyone did everything naked! (4)
I believe the answer is:
eden
'where in' is the definition.
The answer is a location as well as being a singular noun. This is suggested by the definition.
'beginning everyone did everything naked' is the wordplay.
'beginning' says to take the initial letters.
The first letters of 'everyone did everything naked' is 'EDEN'.
'the' acts as a link.
Can you help me to learn more?
(Other definitions for eden that I've seen before include "The primal garden" , "The most enchanting garden of all" , "The near-perfect garden" , "Tory Prime Minister, 1955-57" , "Former British PM - unspoilt paradise" .)