black
A horse color which is black, including the muzzle, flanks, mane, tail and legs unless white markings are present.
board
Short for “tote board,” on which odds, betting pools and other information are displayed.
bolt
Sudden veering from a straight course, usually to the outside rail.
bomb(er)
A winning horse sent off at extremely high odds.
bounce
A poor race run directly following a career-best or near-best performance.
box
A wagering term denoting a combination bet whereby all possible numeric combinations are covered.