A main subdivision of a larger written work. Any of the component works forming the Bible. Frequently as part of a full title, as the Book of Daniel…

Each of the largest parts or sections of a single volume of a book; (also) each of the separate volumes of a book. Now rare except as merged with…

A separately bound portion or division of a work; one of two or more portions into which a work of some size is divided with a view to separate…

A collection of writings forming a book, such as the Old or the New Testament. Also: a recognized division or volume of such a book. Obsolete.