Book

noun

1. A collection of sheets of paper bound together to hinge at one edge, containing printed or written material, pictures, etc.

   "He was frustrated because he couldn't find anything about dinosaurs in the book."

2. A long work fit for publication, typically prose, such as a novel or textbook, and typically published as such a bound collection of sheets, but now sometimes electronically as an e-book.

   "I have three copies of his first book."

3. A major division of a long work.

   "Genesis is the first book of the Bible."

4. A record of betting (from the use of a notebook to record what each person has bet).

   "I'm running a book on who is going to win the race."

5. A convenient collection, in a form resembling a book, of small paper items for individual use.

   "a book of raffle tickets"