any machine for computing and showing totals of measurements, etc.; esp., a machine used in parimutuel betting for registering bets and, usually, computing the odds and payoffs while the bets are being placed
Origin:
Fr totalisateur
See totalizator in American Heritage Dictionary 4
noun
A machine for computing and showing totals, especially a pari-mutuel machine showing the total number and amounts of bets at a racetrack.