Definitions

1. noun

The sheet of paper or cardboard attached to the inside of the back cover of a book to reinforce it and prevent the pages from coming loose, typically containing information about the book’s contents, author, publisher, etc.

“The library catalog listed the book’s publication details on its endsheet.”

2. verb

To add an endsheet to a book, especially in the process of binding or repairing it.

“The book conservator had to endsheet the damaged book before lending it to the reader.”