Minor nitpick re: horse racing: it's "totalisator" (usually abbreviated as "tote") and refers to the machine that keeps track of the pools and odds, and the term for the betting pool type is "parimutuel".

Fun fact: totalisators were originally mechanical computers that were used to price betting pools around the turn of the 20th century (http://www.computerhistory.org/atchm/racetrack-betting-mecha...).