Betting pool
A betting pool, syndicate, sports lottery, sweep, or office pool if done at work, is a form of gambling, specifically a variant of parimutuel betting influenced by lotteries, where gamblers pay a fixed price into a pool (from which taxes and a house "take" or "vig" are removed), and then make a selection on an outcome, usually related to sport. In an informal game, the vig is usually quite small or non-existent.