Filly A yearling Arabian filly A filly is a female horse that is too young to be called a mare. In most cases, a filly is a female horse under four years old.

Apr 24, 2024 · A filly is a young female horse that hasn’t yet reached her fourth birthday. In the horse world, knowing these terms is key because each one tells us a bit more about the horse’s age and …

Share Kids Definition filly noun fil· ly ˈfil-ē plural fillies : a young female horse usually less than four years old

Dec 18, 2025 · A filly is a female horse under four years old, while a mare is a female horse over four. The term "foal" refers to a baby horse of unknown gender, while "filly" specifically refers to a young …

Aug 22, 2025 · A filly is a word used for a young female horse under four years of age. The word filly was coined in the Medieval period and was derived from the Old Norse fylja, which meant young …

It is a filly carrying a much lighter mount and, in view of that, is much more likely to succeed in the race for better and faster production.

Jul 7, 2025 · A filly is a young female horse under the age of four. This classification is important in equine care, as fillies have unique developmental needs compared to older mares or male horses.

Nov 16, 2024 · A filly is a young female horse, typically under the age of 4. This term refers specifically to a female horse that has not yet reached full maturity. Filly horses are energetic, playful, and …

FILLY definition: a young female horse. See examples of filly used in a sentence.

A filly is a female horse that is young and between one to three years old. On the other side, a mare is a female horse that you can breed and are four years or older.