Bookcase, Shelf, shelf, rack, ledge, ledges, shelving, book plates, bookshelfs, bookshelves, bookshelf, counter, stand, support, frame, trestle, trestles, holder, holders, structure, container, bin, bunker, bench, furniture, perch, receptacle, receptacles, supporting tower, flesh, seat, obstacle, furnishing, human body, table, ridge, supporting structure, body, viewpoint, hazard, anatomy, framework, standpoint, holding device, tower