Definitions

1. noun

The underside of the cover of a book, usually made of cardboard, that is pasted to the top of the book’s binding

“The collector carefully examined the pastedown of the antique book for any signs of damage.”

2. noun

In printing, the underside of the cover of a book, usually made of cardboard, that is pasted to the top of the book’s binding

“The printer’s manual described how to create a pastedown for a self-published book.”