Definitions for "bookend"
Keywords:  upright, bookcase, slant, row, shelf
a support placed at the end of a row of books to keep them upright (on a shelf or table).
A bookend is an object designed to keep a row of books upright by placing it at the end of the row, frequently in a bookcase. They are common in libraries and in publishing. If bookends are not used, rows of books may slant to a side.