maiden
Breeding: A female that has never been bred.
Harness racing: A stallion, mare or gelding that has never won a heat or race at the gait at which it is entered to start and for which a purse is offered.
Thoroughbred racing: A horse or rider that has not won a race.
mane
Long hairs growing on the crest of the horse’s neck, which are usually kept clipped to about six inches in length for neatness, or decoratively braided.
mare
Female horse five-years-old or older.
mare’s month
September. In theory, because mares that have not run well during the summer often “wake up” in September.