The most common and most likely answer to this crossword clue is the 8 letter word ENDPAPER
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More clues leading to the result ENDPAPER
Buddy explains!
The straight part
We know that "Page bound not to be read" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case page bound not to be read = endpaper.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does ENDPAPER mean?
ENDPAPER noun- Either of two folded sheets of paper used to connect the front and back covers of a book to the first and last pages