Definition of make book in US English:

make book

phrase

US
  • Take bets on the outcome of an event.

    figurative ‘I wouldn't make book on it’
    • ‘The company is always game to open a book on most events and we do get some unusual requests.’
    • ‘Meanwhile, a quintessentially Wodehousian plot is brewing in nearby Tottleigh Castle, where staff is making book on the identity of Lady's Alyce's husband-to-be.’
    • ‘In fact Betfair has nothing in particular to do with racing or any other sport on which it makes a book.’
    • ‘You can think of it as an American alternative to those famous London betting shops that will make book on just about anything.’
    • ‘It will probably do worse - since the kind of events he wants to make book on are even more unpredictable and emotional than elections.’
    • ‘IG Index and its spread betting competitors garner publicity by making a book on ‘grey market’ prices ahead of initial public offerings (IPOs).’
    • ‘The bookmakers have opened a book on the Anti-Litter League quoting Kilkenny city as favourite to win at odds of 10/1.’
    • ‘If I knew how to open a book (the bookie kind, I know how to open book-books) I would.’
    • ‘Major organizations are making book on who will be the next Miss World; check out this site for the current odds, and place a bet if you are so inclined.’