make book . make book {v. phr.} To serve as a bookmaker taking bets on the horse races. The police were out to prosecute anybody who made book illegally. Categories: add yours add yours {v. phr.} Source: A Dictionary of American Idioms by A. Makkai, M.T. Boatner, J.E. Gates © 2025 To section: M Subscribe to: American Idioms► Also consider the parent subscriptions (3)Idioms feedEnglish languageHome page and general feed Discuss Discuss