• noun a form of one-day cricket in which the competing teams each have one innings of a maximum of 20 overs. The Laws of cricket apply in Twenty20, but with a few exceptions: e.g., no bowler may bowl more than four overs, and the penalty for a no-ball is two runs rather than one. Twenty20 has gained rapid popularity since its introduction in 2003, and there are now several domestic and international competitions. Part of its attraction – for spectators and organisers alike – lies in the fact that a game can be completed in a timespan not significantly greater than that of a soccer or rugby match.