Crossword-Solution: ENDPIECE 8 letters, 3 clues 🏆 scrabble score: 13

The projections should each have attached to them what I rudely term an endpiece (for want of a better name), that is, a shallow and extremely light adhering bookcase (light by reason of the shortness of the shelves), which both increases the accommodation, and makes one short side as well as the two long ones of the parallelopiped to present simply a face of books with the lines of shelf, like threads, running between the rows.