sweepstake
(also infml 口語作 sweep) n
(a) type of gambling in which all the money bet on the result of a contest is divided among those who by chance have selected or been given tickets corresponding to the eventual winner(s) of the contest 賭金全贏制(勝者可獲全部賭金者).
(b) horse-race on which money is bet in this way 實行賭金全贏制的賽馬.