numbers pool

noun

1. Also called numbers, numbers game, numbers racket. an illegal daily lottery in which money is wagered on the appearance of certain numbers in some statistical listing or tabulation published in a daily newspaper, racing form, etc.
2. policy²(def 2).

noun

1. US an illegal lottery in which money is wagered on a certain combination of digits appearing at the beginning of a series of numbers published in a newspaper, as in share prices or sports resultsOften shortened to: numbers