Beyer number
A handicapping tool, popularized by author Andrew Beyer, assigning a numerical value (speed figure) to each race run by a horse based on final time and track condition. This enables different horses running at different racetracks to be objectively compared.
board
Short for “tote board,” on which odds, betting pools and other information are displayed.
bomb(er)
A winning horse sent off at extremely high odds.
box
A wagering term denoting a combination bet whereby all possible numeric combinations are covered.
bridge jumper
A person who wagers large amounts of money, usually on short-priced horses to show, hoping to realize a small, but certain profit. The term comes from the structure these bettors may seek if they lose.