Backside: The racetrack's barn area.
Bay: A color ranging from tan to dark chestnut with black mane, tail and points.
Beyer Speed Rating: A measure of performance popularized by Andy Beyer of the Washington Post.
Bounce: An exceptionally poor performance on the heels of an exceptionally good one.
Broodmare: Female Horse used for breeding.
Broodmare Sire: A sire whose female offspring become producers of exceptional performers.
Bullet: Fastest workout of the day at a particular distance.