Samuel Butler's Utopia (7)
I believe the answer is:
erewhon
'samuel butler's utopia' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for erewhon that I've seen before include "Make-believe place" , "Butler's work" , "Book by Samuel Butler" , "Satirical novel" , "Samuel Butler's utopian satire" .)