Age		Every horse shares a "birthday" of January first. A horse becomes one year old on the first of January after he or she is born, and turns two one year later -- regardless the actual date of his or her birth.
Break		When a horse gallops, instead of trotting or pacing, it's on a break. The driver must get the horse out of the way of the others, must not improve their position, and must attempt to get the horse back on its proper gait. A horse is not automatically disqualified.
Colt		A male horse, age three or under.
Dam		The female parent of a horse.
Filly		A female horse, age three or under.
First-Over		A horse racing on the outside without another horse directly in front of him or her. A foreshortening of of the phrase "first overland".
Foal		(noun) A newly-born horse. (verb) The act of giving birth.
Gelding		A desexed horse of any age.
Horse		A male horse, age four and up.
Mare		A female horse, age four and up.
Purse		The cash prize won by the owner.
Qualifying Race		A race without a purse or betting used to determine a horse's ability and manners. Horses who have made repeated breaks in stride or have been away from the races for a long period of time must race in a qualifying race before being allowed to race in a b
Sire		The male parent of a horse.