Mare
Definition 1 of 3
Pro Tip 1/3
Female Horse
The term 'mare' specifically refers to an adult female horse, not a foal or a male horse. She's a beautiful mare, about five years old.
Pro Tip 2/3
Animal Breeding
When speaking about breeding horses, 'mare' indicates the horse is female and capable of producing offspring. The breeder has several mares ready for mating this season.
Pro Tip 3/3
Not a Foal
Mare is used for adult females, while a young female horse is called a filly. That filly will become a fine mare in a couple of years.