make a book

make a book

To set or determine the odds of various competitors' chances of victory, used by gamblers to place bets or wagers. Used especially in horse racing. There is actually a lot of mathematics involved when making a book for a race—it's certainly a lot more than just looking at the horses and guessing!
See also: book, make
Farlex Dictionary of Idioms.

make (or open) a book

take bets and pay out winnings on the outcome of a race or other contest or event.
See also: book, make
Farlex Partner Idioms Dictionary
See also:
  • come in
  • come in a certain position
  • come on in
  • (Is) this taken?
  • be (flat) on (one's) back
  • (Is) that everything?
  • a little goes a long way
  • by half
  • damn well
  • flat on (one's) back