Pronunciation: [mˌe͡ɪks bˈʊk] (IPA) 
The correct spelling of "makes book" is actually "makes a book." In IPA phonetic transcription, it can be written as /meɪks ə bʊk/. The word "makes" is pronounced as /meɪks/ with a long A sound, and the word "book" is pronounced as /bʊk/ with a short U sound. The article "a" should be included to make it grammatically correct. "Makes a book" means to create or produce a book.
The phrase "makes book" is an idiomatic expression most commonly used in gambling and betting contexts. It refers to the act of accepting and handling bets, specifically in the role of a bookmaker. A bookmaker is an individual or organization that sets odds, accepts bets, and pays out winnings on various sports and other events.
In the world of gambling, "makes book" indicates that a person or entity is actively involved in creating and maintaining a gambling market. It implies the practice of taking wagers and establishing odds for different outcomes, thus creating a balanced book (or a fair betting market) that ensures a profit regardless of the actual outcome.
When someone "makes book," they are essentially acting as a facilitator for individuals interested in placing bets. They analyze different factors, such as historical performance, form, and other variables to determine the odds for different outcomes. They assess the risk associated with each possible outcome and establish odds accordingly to attract bets from individuals who may have differing opinions on the outcome of the event.
Ultimately, "making book" is an integral part of the gambling industry, as it involves setting and adjusting odds, accepting bets, and managing the risks associated with the wagers.
The phrase "makes book" comes from the world of gambling and bookmaking. "Bookmaking" refers to the practice of taking bets on various outcomes of an event, and a "bookmaker" is someone who accepts and pays off bets. The term "makes book" specifically alludes to the process of creating a book, which forms a record of bets placed and allows the bookmaker to calculate potential payouts.
The etymology of "makes book" dates back several centuries. In the 18th and 19th centuries, bookmakers would write down the names of bettors and the amount they wagered in a ledger or "book". Filling this book with bets enabled the bookmaker to estimate potential winnings and adjust odds accordingly. Over time, the phrase "makes book" emerged as a colloquial expression to describe the activity of a bookmaker taking bets and compiling them in a record book.
