OTB


OTB
I. abbreviation
open to buy
II. abbreviation
offtrack betting

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offtrack betting.

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OTB (no periods),
off-track betting (a state-licensed system in the United States for placing bets on race horses away from the race track): »

Seems that the OTB computers that are linked with those at the race track developed a colic or something, and wagers at the fourteen shops around town had to be recorded manually (New Yorker).

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abbr. off-track betting

Useful english dictionary. 2012.