"Book" from the Blue Lexicon
BOOK: A container in which crystallized narrative adheres. Colloquially, the narrative, itself. A book can be made of any substance which can bear language reliably and without loss of its own form. Examples include memory, paper, glass, arithmetic engines, black water, and people. Crosswise books can contain several narratives simultaneosly. These extra narratives can be obtained by reading the book sideways or backwards.