flyleaf
US /ˈflaɪ.liːf/
UK /ˈflaɪ.liːf/

1.
форзац, свободный лист
a blank page at the beginning or end of a book, typically between the endpaper and the first or last page of the text.
:
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The author signed her name on the flyleaf of the book.
Автор подписала свое имя на форзаце книги.
•
He wrote a dedication on the flyleaf before gifting the book.
Он написал посвящение на форзаце, прежде чем подарить книгу.