bookstop

From book +‎ stop.

bookstop (plural bookstops)

1. (rare) A bookend.
   • 2010, Sheryl Kindle Fullner, The Shoestring Library, page 107:

     Librarians obsess about edging the collection (bringing all books up to the edge of the shelves to make them easier to find and to look tidy). If you have paperbacks or novels stored in deep shelves, make bookstops from free wood.

   • 2011, Catherine Hall, The Proof of Love:

     He arranged his little library on the shelf in order of size, lining the edges up neatly, using the horn as a bookstop, making adjustments until the tip of it faced the room directly.